Develop Bugs

USB doesn't work???

Can someone please help? I just bought a used P3300 from ebay (a wholesaler). The phone works great, absolutely everything works except for the activesync over USB. The phone is not even seen by the computer with or without activesync. I have tried it on several computers with the same issue, yet the battery charges through the USB cable.
I even reflashed the ROM using the SD card method and still have the same issue. What might be going on here??? How can the USB data connection be not working? I've never experienced this with many different phones I've had.
thanks,

Go to Settings, Connections, USB to PC, and untick Enable advanced network functionality.

I tried that, it didn't make a difference. I also tried both Activesync 4.5 and 4.2. Still nothing. I hard reset and soft reset several times - still nothing.

What Firewall is on your PC. Could be this causing the hassle.

Have you tried using a known-working usb lead?

I had this problem also to begin with, google an application called "USBKILLER" and put this .CAB onto your memory card and load this onto the phone.
When your in the application select SERIAL and click YES and this should resolve your problem - I am not sure why this happend but my mate who has the same phone does not have this problem and can resolve it by removing the check box in USB to PC settings

hey guys.... thanks for the input. My firewall is disabled - I read the Microsoft article regarding the ports Activesync uses. But AS works with my other phones, so I know that's not the problem. Same thing with the USB cable. It works with the other phones but not this one.
nicko666, I will try that USBkiller program later tonight. Thank you for the suggestion. I'll let everyone know how it goes.

Found USBkiller Cab File Attached - good luck

I tired the USBkiller program (found it myself earlier) but it also doesn't make a difference. I tried changing the setting to SERIAL in the program and also playing with the "advanced network functionality" and activesync connection settings and it's a no-go.
Still nothing works. Do I have a broken device?

hardware problem
i had the same problem after 1 month of using my p3600 i pay 59 euro to change it because the garanty not include this problem.the service told me that it was my fault !!!!

Hello. Is your PPC detected by Windows in the manager of peripheral? It is necessary that you look at if you have a new network card named "Windows Mobile".

I had that problem. I am sorry, but I think you bought a used and not-functional phone. The problem is probably due to high power that the phone got, probably when charging it through a car-charger. You should NEVER connect the phone to a car charger and then start the car - the power can damage the USB connection. You should always first start the engine and only then connect the phone to the charger.
Anyway, I had the same problem - the USB could charge the phone, but no Active Sync connection. I sent my phone to HTC UK, and after one week I got it back with a new board (they replaced the whole inside of the phone). Free of charge.
If this is the situation with your phone - no software solution will help you.

Damn, that sounds like what's going on with my phone. How do I find out how to have it serviced? I can't find anything on the useless HTC site. Please help....
And thanks to you all for the help so far.
mattan said:
I had that problem. I am sorry, but I think you bought a used and not-functional phone. The problem is probably due to high power that the phone got, probably when charging it through a car-charger. You should NEVER connect the phone to a car charger and then start the car - the power can damage the USB connection. You should always first start the engine and only then connect the phone to the charger.
Anyway, I had the same problem - the USB could charge the phone, but no Active Sync connection. I sent my phone to HTC UK, and after one week I got it back with a new board (they replaced the whole inside of the phone). Free of charge.
If this is the situation with your phone - no software solution will help you.
Click to expand...
Click to collapse

I remember sending them mail regarding the problem, via HTC site (mail: [email protected]).
After all the solutions they suggested didn't work, they called me and asked me to send the phone to the UK (they gave me all the details and were very nice and efficient). I must say that my phone was still at warranty period.

this may sound silly, but have you tried the usb ports on the back of the computer?
for some reason, the usb headers on my motherboard don't seem to recongise the phone, i'm not sure if theres no enough power or what, i've onbly tried the cable in a laptop and that works fine...if i plug them in the front usb ports i get the error in windows 'Your device has malfunctioned, Replace the Device and Try Again' or something very simular, tried the other usb header on the board, same problem, back ports, no problem...all other usb devices work fine in all the ports!

Dear all.
I work for a company that has over 600 of the htc p3300. Some of them will work in the usb and some don't.
I have 4 at the moment, 2 of them will work with the usb and the other 2 won't........
Tries all the stuff mentioned here and nothing helps.
Can't update them because of the usb........
HTC are not a lot of help either......

stead said:
this may sound silly, but have you tried the usb ports on the back of the computer?
for some reason, the usb headers on my motherboard don't seem to recongise the phone, i'm not sure if theres no enough power or what, i've onbly tried the cable in a laptop and that works fine...if i plug them in the front usb ports i get the error in windows 'Your device has malfunctioned, Replace the Device and Try Again' or something very simular, tried the other usb header on the board, same problem, back ports, no problem...all other usb devices work fine in all the ports!
Click to expand...
Click to collapse
Hi I had been trying to sort this problem out too, and after reading about starting cars with the device on charge I thought I was doomed. But what stead suggests has just worked for me too. I was using the nearest USB on my laptop but plugin it in round the back has just got it working again. The last time it synced it was 'Repairing' the Active Sync 4.5 setup program run through. I must admit that the cable into the phone is also resting on a pen at the base of the phone- just to make sure....

USB Device Not Recognised - A NEW APPROACH

I'm hoping the wisdom and expertise I always find on this forum can help me.
I have a new AT&T branded HTC Touch Pro 2 (Tilt 2). After about a week, I began getting the dreaded "USB Device Not Recognized" error any time I plug it in. It never connects properly. I have customized the phone using some of the cool tools I found here, but I have never flashed any portion of the device - it's just the way I got it (WM6.5 CE OS 5.2.21849 Build 21849.5.0.63)
As suggested in various places on this forum, I have:
Soft Reset the phone numerous times
Rebooted the computer (WinXP) many times
Tried several different cables, including the HTC branded extUSB one
Tried different USB ports on my computer(s)
Tried other computers (WinXP)
Tried Windows 7 (WMDC) on another computer
Hard Reset the phone several times (with and without backup restore)
Uninstalled and re-installed ActiveSync 4.5 and the USB drivers
Adjusted various settings, including USB to PC, according to various posts
Cursed extensively in three languages
Regardless of any of this, every time I connect, I get the "USB Device Not Recognized" error within a few seconds.
I am now convinced the problem is hardware, probably the USB connector on the phone. I can't be without the phone until later this month, so I can't get the hardware fixed for a while. But I need to sync.
USB, of course isn't the only way to sync; the phone has Bluetooth. The problem is, I previously reset the device and un/re-installed ActiveSync, removing the pairing at both ends. To sync over Bluetooth, I have to first sync over USB, something I can't do.
MY QUESTION IS THIS:
Does anyone know a way to force ActiveSync to pair over Bluetooth WITHOUT first pairing over USB?
Any assistance anyone can offer will be greatly appreciated
Tenaya
Under certain circumstances, urgent circumstances, desperate circumstances, profanity provides a relief denied even to prayer.
- Mark Twain

if u go to settings>connections>usb to pc un check enable faster data sync
that might help

Thanks for the reply. Unfortunately, that's one of the first things I tried and it makes no difference (I just tried it again - no joy). I should have listed it in my original post.
The only thing I can think of is to somehow force the phone to sync via Bluetooth WITHOUT having previously synced via USB.
Anyone know if this is possible and, if so, how to do it?

I think you should go and replace your hardware if it has warranty (since you have not flash it). tell them my phone USB connection is not working at all, and let them try it on their computers to make sure, am sure the warranty covers this kind of things

Uh, you're talking about the error on your PC right? This is a common issue. (with pc's) Use another USB port on the computer. That is what I have had to do. It worked fine for both the TP2 and my Wizard before that, but ever since I reloaded the computer I get that error on certain USB ports. have not researched it too heavily yet, but I plan to.

Did you try installing the Windows Mobile Device Center?
http://www.microsoft.com/windowsmobile/en-us/downloads/microsoft/device-center-download.mspx

ChosenWonn said:
Uh, you're talking about the error on your PC right? This is a common issue. (with pc's) Use another USB port on the computer. That is what I have had to do. It worked fine for both the TP2 and my Wizard before that, but ever since I reloaded the computer I get that error on certain USB ports. have not researched it too heavily yet, but I plan to.
Click to expand...
Click to collapse
kgeissler said:
Did you try installing the Windows Mobile Device Center?
http://www.microsoft.com/windowsmobile/en-us/downloads/microsoft/device-center-download.mspx
Click to expand...
Click to collapse
Did either of you read the post? It clearly states that he has done BOTH OF YOUR SUGGESTIONS!
Unfortunately, it does sound like this is an issue with bad hardware in the phone. I would suggest getting it replaced under warranty.
KD8FRE

I'm having the same problem (vzw TP2). I've already messed with all usb-to-pc settings, tried different USB ports (I've had other USB devices that req'd that), reset my PC (thank you dogbert), reset my device and am currently reinstalling ActiveSync; though I doubt that's the problem because my BT syncs work fine (I don't recall being req'd to do a USB sync intially before doing a BT sync, so I can't really help the OP with that). My device does charge via the USB cable when plugged into the PC. Disk drive mode doesn't work any more than activesync. I also haven't been able to spot it on device manager. Uninstalling it there was one of my first ideas.
I'm wary of using a BT sync to install the official VZW 6.5 ROM, because I've read bad things about ROM interruptions.
I have yet to find by searching anyone who had a real USB sync problem (i.e., one that doesn't get "fixed" by resetting or something equally simple) who has actually posted that they found a solution.
@OP, when do you get a message that you are req'd to sync by USB first? Does activesync tell you or your device?

I have this problem at work where the machine is managed. It just refuses to recognize the device. It's a security issue that we haven't been able to track down yet. I think if you look in one of the logs (forget which) you will see the actual error as it tries to load the driver.

just for the hell of it, try an older version of activesync. just tryin to throw in all possible fixes. http://www.microsoft.com/downloads/...3a-28bf-4cac-a682-58d3233efb4c&DisplayLang=en
try removing the sdcard and syncing?

RE: A New Approach
Thanks for all your responses. Sorry to take so long to respond to your questions and suggestions, I've been away (funerals and CES).
I have read extensively on this subject, have tried EVERYTHING everyone has suggested, and reached the conclusion that this IS a hardware problem, probably involving the USB jack itself.
At least for a while, replacing the hardware is something I can't do.
I want a BT sync for syncing with Outlook (Calendar/Contacts) and for installing software. I currently have NO plans to flash the ROM, I agree that would be risky over BT.
The error appears to be generated by Windows, I don't think it ever gets as far as ActiveSync, ActiveSync always indicates that it is not connected.
Despite that, I did try an earlier version of ActiveSync (can't remember which one); no joy. I tried Windows Mobile Device Center on a Windows 7 machine, but the results were the same: Device Not Recognized.
SO, does anyone know how I can force a BT sync WITHOUT first syncing by USB? That would solve my immediate problem.

Unfortunately I been there and done that.
The only workaround is to use a free exchange server - www.alol.net.br
I put it on my computer's outlook. Copied all the contacts and calender items from my default folders. Synced with ALOL. Installed on my phone, and synced via my wifi.
Not the best solution, but T-Mobile refuse to fix the faulty Diamond motherboard, but it works fine.
The first sync on the phone comes up with a error message, but after that it is fine. You need to manually put in all the settings.

I'm assuming that you have your phone set to "Activesync" + Enable Faster data synchronization on your Phone, under Settings->Connections->USB to PC
Have you tried changing this to "Disk Drive"? Activesync can still connect to the phone and do syncs, etc.
Atleast this is my experience on XP. I've had the same problem on/off after flashing one particular custom ROM.. Don't remember seeing this on my stock Tilt2 ROM.

Have you tried turning your computer Windows' firewall competely off? I read soom were that there seems to be some confict with windows firewall reconizing Activesyc.

None of the settings in the phone, including Disk Drive, make any difference. I'm fairly certain that I've tried them all. None of the settings on the PC side, including Firewall, make any difference either.
The connection never gets to ActiveSync; the USB drivers fail to recognize the device well before that.
As I mentioned earlier, I have become convinced that this is a hardware problem with the phone, probably related to the USB connector. All my research leads there.
The approach I'd like to try is to bypass USB connectivity completely and attempt to sync over Bluetooth. The problem is that ActiveSync refuses to sync over Bluetooth until AFTER the first USB sync (and setup).
Thus my question:
Does anyone know a way to force a sync over Bluetooth WITHOUT first syncing over USB. Registry hack? Settings change? ANYTHING?

Quick note.
This issue started happening to me as well.
And here's the somewhat odd part. With the SD card removed the phone is discovered properly. The original SD card and another spare one inserted in the phone cause the this USB error for me.
Go figure.
(and yes I've tried formatting the sd cards, and factory resetting the phone)
Since I use ubuntu, I'm not really going to spend anymore time figuring out this windows bug. Just needed to apply an update..via windows.

Try this it worked for me
http://www.online-tech-tips.com/computer-tips/usb-device-not-recognized/

Phone does not recognize it is connected to computer through USB

Good day fine sirs and ma'ams.
I would just like to say I love my Tilt 2, and have had it for a few months now with no real problems and this is about my 4th WM phone.
As of about a month ago, I have been unable to connect or sync the device to my PC.
I have WM Device center 6.1 (the latest from the website)
I am running windows 7
I had been able to sync the phone until about a month ago.
I have unchecked the box in the USB to PC for faster data synchronization.
Essentially, when I plug the phone into the computer, it just acts as if it is connected to a charger. Nothing comes up on the phone and nothing comes up on the computer. It just charges. I have even installed and uninstalled WMDC a couple of times.
I really am at my wits end here.
My question is, is there a fix for this apart from sending the phone in? I am able to flash the phone via the microsd card, and even tried going back to the e2 rom that is as close to the ATT rom as I could find.
I did find the stock rom, but it does not come with the image file, just the ruu.exe I believe. I cannot flash roms via the USB cable either, so I am only able to change things like I said, via the microsd card.
Any help is greatly appreciated! Thanks!
And yes, I have searched, and have found many other people posting in other threads saying they have the same problem, and everyone just says to uncheck that one box, which I have done, so that is NOT the problem.

Also, I would just like to add that when I go into the windows directory and attempt to run activesync (repllog.exe) I get the following message.
(cannot communicate with the pc because of the fllowing remote networking error (Error 608)
I have seen others ask help for this question without an answer on xda-dev also.
Thanks again! If anyone has the solution here I think a lot of people will be very happy!

:-(
turn off your firewall then pug ur device in and see if that works... works for me... perhaps your firewall started blocking it for some reason... other than that good luck

I had similar things happen to me in the past. While the phone is connected, check Windows Update whether there is a new version of Sync Center. This has fixed the problem for me.

i appreciate the suggestions.
However,
I have the firewall disabled and it still does not connect.
I uninstalled and reinstalled the WMDC using the latest software directly from the website. There appears to be no updates for the program once it is installed.
Any other suggestions?

Have you tried multiple USB cables, multiple USB ports, or even multiple computers? I've had USB cables which aren't capable of data transfer, as well as USB ports on the computer go bad. You might also considering a hard reset, to ensure no software on the phone could be causing the problem. If it's truly the USB port on the device that's broken, then you're in bad shape if you want to return it to AT&T for repair. You may be able to flash the AT&T stock ROM, but you won't be able to restore the AT&T stock SPL, which they check when fixing the device, so you may very well have to fork over some money to get it fixed. Best of luck

My phone is doing this also.
Multiple PC's, multiple USB ports, multiple cables. All of which worked perfectly beforehand...
The other thing to try is Internet Sharing - when I go in there and press 'connect', then it says Check USB cable connection, connect USB to any of my PC's/laptops and it doesn't register on the phone.
This phone is really a piece of ****. I could rant on for hours about the stupid problems there are with this handset, I'm sure I'm not alone. Perhaps I expected too much.
Anyway, if anyone has any info on how to make my USB connection work I'd love them forever...!

freakygeek said:
My phone is doing this also.
Multiple PC's, multiple USB ports, multiple cables. All of which worked perfectly beforehand...
The other thing to try is Internet Sharing - when I go in there and press 'connect', then it says Check USB cable connection, connect USB to any of my PC's/laptops and it doesn't register on the phone.
This phone is really a piece of ****. I could rant on for hours about the stupid problems there are with this handset, I'm sure I'm not alone. Perhaps I expected too much.
Anyway, if anyone has any info on how to make my USB connection work I'd love them forever...!
Click to expand...
Click to collapse
Could be a faulty device...my phone connects to every computer, every time. take the phone to your provider and show them whats happening.
Also, i've had issues with the standard mini USB ( http://www.meditronik.com.pl/doc/mini/usb-kabel-mini=foto=canon.jpg ) not properly connecting/loosing connection.
Try a HTC usb it might work better: http://bestcellbuy.com/bargainsea/Pictures/HTC/OEM_Home_Charger_USB_Cable/OEM_HTC_Data_Cable_07.jpg

I've tried the HTC USB lead that shipped with my phone to no avail.
I think the device is faulty (surprise surprise). It charges from USB perfectly fine, every time.
I'll post back once I find out what Telstra say... it's obviously still under warranty but that isn't really the issue - It is just such a major PITA having to switch to a loan phone and deleting confidential business data etc from my phone before sending away for repair etc etc...
Thanks for the help though, it is appreciated.

Well, I've got my USB going again. Not sure exactly what I've done, but basically I pulled the battery out for a few minutes and replaced it, turned on and off the 'high speed' checkbox in USB Connection Settings, and it has come good.
****box phone.

Somehow mine started working again last night too. Same cable, same port and everything.
Really odd, but I'm not complaining at the moment!

It seems this problem is spreading, as i'm being terrorized by this stupid bug... This afternoon I've tried to get internet on my laptop (by connecting my phone to it), but it was just charging my phone, so I thought the cable was broken. Next I tried it at home on my desktop computer, with another cable, and it did the same (several reboots have passed).
I don't know if someone already tried it, but when you enter the bootloader, it says "Serial". Normally when you connect the USB-cable it changes to "USB" (at least with my kaiser, universal and wizard). on my phone it didn't...... can anyone check this for me??
to enter bootloader: hold volume-down-button and pres soft-reset-button.
thanks in advance!

InjecTioN said:
It seems this problem is spreading, as i'm being terrorized by this stupid bug... This afternoon I've tried to get internet on my laptop (by connecting my phone to it), but it was just charging my phone, so I thought the cable was broken. Next I tried it at home on my desktop computer, with another cable, and it did the same (several reboots have passed).
I don't know if someone already tried it, but when you enter the bootloader, it says "Serial". Normally when you connect the USB-cable it changes to "USB" (at least with my kaiser, universal and wizard). on my phone it didn't...... can anyone check this for me??
to enter bootloader: hold volume-down-button and pres soft-reset-button.
thanks in advance!
Click to expand...
Click to collapse
Verified - I cannot flash with USB.

Bright.Light said:
Verified - I cannot flash with USB.
Click to expand...
Click to collapse
thanks for your help.
I've flashed my device with the newest official from HTC, and it still doesn't connect with the usb-data (i used the "flash-from-SD" -method).
The strange thing was that it happened suddenly... i never use a headset with cable, so its almost impossible the connector is broken. Any ideas people??
btw, the device isn't SPL flashed, so i can't use other roms beside the official roms...

Same thing happened to me. No USB sync, no USB connection at all; it only charges. Thankfully I had a chance to flash to a custom ROM before this happened.
The only way I can sync my data is to use a bluetooth USB in my PC. Works quite well with my contacts, calendar, & email, but I have yet to try to transfer any large files.
The bluetooth USB I went with was ASUS USB-BT21 USB 2.0 Mini Bluetooth Dongle. It is VERY low profile, too, but I would have liked for it to come with an end cap like those USB flash drives, otherwise I have yet to find any complaints about it. The price was great and so much cheaper than spending an additional $70-$100 to get my USB port on my device fixed.
Here's my saga: No Syncing, No USB Connection
Best of luck!
Debbie

this happened to me before...when you connect your devivce to your laptop/comp, are you guys not getting the little pop up that says activesync & disc drive...??? if so jus make sure at least one of those are checked...sometimes both of the circles will be blank, thus the comp will simply charge it...
unplug the device for approx 10 sec then plug it in again, and the box should pop up again...
also...if you are tethered to your comp using the tp2's internet, your comp will not recognize your tp2's storage...

da9th_one said:
this happened to me before...when you connect your devivce to your laptop/comp, are you guys not getting the little pop up that says activesync & disc drive...??? if so jus make sure at least one of those are checked...sometimes both of the circles will be blank, thus the comp will simply charge it...
unplug the device for approx 10 sec then plug it in again, and the box should pop up again...
also...if you are tethered to your comp using the tp2's internet, your comp will not recognize your tp2's storage...
Click to expand...
Click to collapse
was the first thing I checked. thanks for your input though

InjecTioN said:
thanks for your help.
I've flashed my device with the newest official from HTC, and it still doesn't connect with the usb-data (i used the "flash-from-SD" -method).
The strange thing was that it happened suddenly... i never use a headset with cable, so its almost impossible the connector is broken. Any ideas people??
btw, the device isn't SPL flashed, so i can't use other roms beside the official roms...
Click to expand...
Click to collapse
I did not know one could flash to new ROM by use of the SD card?
Mine is de-HSPL, so now I can not select another ROM anymore. (Got the 6.1 default one again)

Bright.Light said:
I did not know one could flash to new ROM by use of the SD card?
Click to expand...
Click to collapse
I've never used the SD-Card method myself, but now will have to due to my USB port no longer working.
I've been syncing by using Bluetooth USB and just tried transferring files via Bluetooth and it worked like a charm! Smaller files were instantaneous and large files took longer (of course), but also worked fine.
I just tried copying over a RHODIMG.nbh file and that bugger worked (188MB)... Excellent!!!
I did buy a USB card reader to transfer files, just to be on the safe side, but I must say that this little Bluetooth USB that I picked up is working awesome.
Debbie

i exactly have the same problem.I guess i need to send it back

[Q] Connecting to PC help!

OK I have searched extensively for the last 3 days and have come up fruitless with a working solution. While I have found countless threads (even on here) none of the solutions offered seemed to work for me. So please no flaming When I plug my OG Evo into a USB cable to a computer all that happens is it starts charging. the phone never asks what I want to do. the PC never sees it and the phone does not recognized that it's plugged in. Here are some of the things I have done so you guys don't tell me to search again.
Please note this is an unrooted 2.3 Evo
Rebooted, pulled batteries.
Wiped completely. This includes cache.
Turned "ask me" on and off in the settings
Changed USB cables (6 different ones)
changed PC's (5 Different ones, with 3 different OS's)
Updated just about everything (Including my girlfriend, LOL)
Force stopped PC sync and rebooted.
I am not running any PC sync programs at all.
Any help would be greatly appreciated.

raremind said:
OK I have searched extensively for the last 3 days and have come up fruitless with a working solution. While I have found countless threads (even on here) none of the solutions offered seemed to work for me. So please no flaming When I plug my OG Evo into a USB cable to a computer all that happens is it starts charging. the phone never asks what I want to do. the PC never sees it and the phone does not recognized that it's plugged in. Here are some of the things I have done so you guys don't tell me to search again.
Please note this is an unrooted 2.3 Evo
Rebooted, pulled batteries.
Wiped completely. This includes cache.
Turned "ask me" on and off in the settings
Changed USB cables (6 different ones)
changed PC's (5 Different ones, with 3 different OS's)
Updated just about everything (Including my girlfriend, LOL)
Force stopped PC sync and rebooted.
I am not running any PC sync programs at all.
Any help would be greatly appreciated.
Click to expand...
Click to collapse
has it ever worked properly? maybe its a problem with the drivers?

Well that is difficult to answer. it has never worked with this phone but other phones have worked in the past (My 6th replacement from Sprint), but no phone has been connected to my new win 7 laptop or the other PC's I tried it on. I wish I had my old PC to test connectivity but I do not. The Phone charges on every PC I Plug it into, and I tried it with multiple cables just in case it was my cable that went bad.

well i would try to update the drivers. or delete them if that doesnt work and re-install. what OS are you using on your pc? does it say 'the usb device is not recognized'? oh you also want to make sure that you have the adb drivers installed. thats probably the problem.

OK the PC never sees the phone. I do not even get "Device not recognized". Nothing happens at all except that the phone just starts charging. I think it may be a hardware issue I am having. I just hate the prospect of having to bring my phone back to Sprint.

I was having the exact same problem which was keeping me from rooting. I finally got my computer to recognize my evo by connecting it via usb and entering boot menu. I began selecting hboot and fastboot and my computer "saw" my evo. No problems since that point and now I'm rooted and stoked

Thanks for the Tip, I just tried it. Nothing still cant see my phone. Even HBoot USB didn't work. Thanks for the tip though. It's appreciated!

do you have usb debugging turned on?

[Q] Unable to Connect to PC. Upgrading from S2

Just upgraded from an S2 to an S3 and am having an issue with getting my S3 to connect to my PC that I previously had S2 drivers on.
I am having an issue however that I cant seem to figure out. When I connect my phone to my PC via USB cable it detects my phone for a few seconds, then trys to install drivers and then the connection disconnects and reconnects a few times a second. To the point where my PC is beeping all the time because it is recognizing a new device and on the notification tab on my S3, connected to PC flashes off an on. I have tried reinstalling drivers, booting the phone already plugged into pc, switching to camera mode, turning the pc and phone both off and starting together and none of these things help.
I did some searching and it appears that a few others have experienced this when upgrading from a different Samsung device, however even after going to device mgr and uninstalling those drivers I still have the same issues. I dont know if there are some drivers that are not displayed or something. I have tried a different cable with no avail. However when I connect my phone to a new PC that has never had a samsung device installed before it works with zero issues. Someone recommended using the Naked Drivers however I cant even get to the point to pick which driver to use before the device starts disconnecting and reconnecting on my PC several times a second.
Has anyone else experienced this? Thanks.
-Sayajin

Hmm, try this. Dial ##3424#, tap on PDA, then Qualcomm USB Setting, tap on MTP+ADB, ok. See what happens now.

I'd swap out the USB cable and try a different port, if still not working then install Kies and let it run the connection diagnostics which has resolved this issue for me in the past.
Sent from my SPH-L710 using xda app-developers app