Develop Bugs

[Q] rooted m8 non responsive no lights no vibration black screen

I have an HTC One M8 AT&T unlocked, rooted, ARHD 34 installed.
The other day I used the phone until about 9 AM and when I pulled it out of my pocket the very next time there was no response. I tried Volume Up + Power, Volume Down + Power, and Volume UP +Volume Down + Power no response. Tried all three again with power cord attached and still nothing. finally after about the 20th try with power attached I got a charge light to light for about a full second but then it goes off immediately. This now happens every time I plug it in. sometimes it's a full second of the charge light others it just flashes on then off immediately.
I need some help, because I am not sure what is happening and I don't want to just tear it apart and throw parts at it. I am thinking the battery took a crap on me but I need someone else to confirm my suspicions.

tsamrein said:
I have an HTC One M8 AT&T unlocked, rooted, ARHD 34 installed.
The other day I used the phone until about 9 AM and when I pulled it out of my pocket the very next time there was no response. I tried Volume Up + Power, Volume Down + Power, and Volume UP +Volume Down + Power no response. Tried all three again with power cord attached and still nothing. finally after about the 20th try with power attached I got a charge light to light for about a full second but then it goes off immediately. This now happens every time I plug it in. sometimes it's a full second of the charge light others it just flashes on then off immediately.
I need some help, because I am not sure what is happening and I don't want to just tear it apart and throw parts at it. I am thinking the battery took a crap on me but I need someone else to confirm my suspicions.
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Click to collapse
Have you tried using a different charger? You can also check if there is a damage on you charging port.
Try using your charger to a different phone and if it works then there is a problem with your charging port. You may want try plugging in the charger to your M8 and try to move the cable near the port. If it works, then you must charge your phone in a specific position. The best thing to do is call HTC to process RMA.

need help - M9 won't boot at all after a power down. Black screen of death.(Strange)

Need help /advice please
Im on M9 rooted,s-off, viperone 3.5 rom, supercid, firmware 2.10.401.xx and twrp 3.0.0.0. all fine beforehand.
I was planning to do firmware upgrade, so thought i better check the laptop connections first.( So I haven't done any firmware upgrade or rom change yet.) but..
heres what happened
(note - all was working fine last week, recovery, adb, reboot function were all ok.)
- Yesterday i connected my phone to laptop and my laptop suddenly was not detecting the phone (!). strange. it worked last week. (but the laptop was still able to charge the phone then). Tried different cables same thing. strange.
-so i thought its been ages since a power down. probably needs a proper shutdown and then clean reboot right?
-i shutdown the device using the power button. (I might have accidentally pressed the power button too long and forced a shut down - cant recall )
-but the device shutdown like normal and then just would not reboot. nothing. no charge light even when connected to charger now.
-I tried hard reset press all three (vol and power) buttons for 30seconds (up to 1minute) - nothing. phone still "black screen of death". wont boot. (tried vol up+power or vol down + power all no boot no nothing.) Never happened before. No idea what happened. Any ideas?
Any advice much appreciated

Try holding all three buttons for a couple of minutes while it's plugged into the charger.
If that doesn't work, leave it plugged in overnight. HTC phones can have these weird power issues where the phone appears to die, then comes back to life the next day.

iElvis said:
Try holding all three buttons for a couple of minutes while it's plugged into the charger.
If that doesn't work, leave it plugged in overnight. HTC phones can have these weird power issues where the phone appears to die, then comes back to life the next day.
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Click to collapse
OK I will try that. My battery was 90% charged before it died. but will try your suggestion and get back to you. hopefully my M9 is not irrecoverable....
{edit}[Update]
When I plugged into charger the charge light does not go on.
but i tried hold all three buttons while in charger, the charge light did begin blinking on and off times, but no reboot.
(i tried that over 10 times, holding upto 3 or 4 mintues till my fingers turned white, sadly no reboot.)
So I left it plugged into charger overnight but same this morning.
Any idea what it could be? I was rooted, S-off and unlocked bootloader so my warranty is history anyway.
Appreciate any ideas/advice. tia.

Having power issues as well..starting to think this m9 is a piece of junk..3 of my USB chargers stopped working on my m9 (they worked before)..one charges on and off very slowly.

ya my M9 just died and still would not boot. So strange, because it was almost all was fine beforehand. it was just it suddenly could not link to my laptop. and after a power down just died.
So after hours and hours of holding all three buttons while charging, not able to boot for days, and leaving charged for nights and no boot...I gave up. Took my phone to HTC service. They said it might take a month and I have no warranty. not happy with this at all and very confused. My guess is it could be the Power IC or some capacitor that just died. No idea. Makes me begin question quality of the M9. I saw a few guys on youtube comments say same thing. Their M9 after shut down would'nt reboot. So its not just me at least.

I saw this same thing happen on the M7. Some weird power/battery gremlins. Annoying they haven't fixed it.

after 5 months of my phone in and out of different HTC services they could not fix my phone power issue and seems they gave up and
replaced with new phone.
so almost 5 months I had no M9. . the power issue really disappointed me.

HTC One M8 Totally Dead (No Access to Boot Menu)

Hello everyone,
Thanks for always helping in times of trouble.
I was using my HTC one m8 normally, playing with facebook. The battery was on 82%. Suddenly the screen frooze then the whole phone went dead completely. Not even a screen backlight. I tried to power it up. It didn't work. It had original ROM, with no modifications whatsoever.
Here is what I did so far, without any results.
- Charge it for few days with original charger and cable directly from the wall. No sign of life. No charging flashing light.
- Charge it with another cable. Nothing.
- Tried to access the boot menu to wipe everything clean. Pressed power+volume down. Nothing. Dead Screen.
- Pressed power +volume up. Nothing. Dead Screen.
Pressed power + both volume buttons. Nothing. Dead Screen.
- Connect it to the computer with updated HTC Suite. The computer said no phone connected.
I using a crappy old iphone now, but would love to get this HTC back to life. Any past experience with similar situation?
Any tips to resuscitate the dead phone?
Thanks a lot for your help.

In some "stuck" or powered off conditions, you may need to hold the button combos for a minute or so, before it actually reboots. So make sure you are holding them long enough.
But the fact there isn't even a charge LED, is concerning. Even in brick conditions, you should get at least an orange/red LED (maybe blinking? Can't remember). Makes me think the battery is bad.
Also play around with the button combos with the charger connected. I've seen a couple folks have luck with this, when nothing else seemed to work.
Additionally, the phone won't connect to PC when powered down; even on a working phone. You at least need to get to a bootloader screen to connect to a PC in any way.

redpoint73 said:
In some "stuck" or powered off conditions, you may need to hold the button combos for a minute or so, before it actually reboots. So make sure you are holding them long enough.
But the fact there isn't even a charge LED, is concerning. Even in brick conditions, you should get at least an orange/red LED (maybe blinking? Can't remember). Makes me think the battery is bad.
Also play around with the button combos with the charger connected. I've seen a couple folks have luck with this, when nothing else seemed to work.
Additionally, the phone won't connect to PC when powered down; even on a working phone. You at least need to get to a bootloader screen to connect to a PC in any way.
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Click to collapse
Thanks a lot for your reply.
I tried to do as instructed but it didn't work. I held the buttons on different combinations for at least two minutes but the phone stayed dead.
The only changed I noticed is one point I saw a very weak charging flash then it quickly disappeared and never came up again even when I repeated the process. Does this say anything?

LostMan1991 said:
The only changed I noticed is one point I saw a very weak charging flash then it quickly disappeared and never came up again even when I repeated the process. Does this say anything?
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Click to collapse
Hard to know if this means anything specific. The symptoms don't look good. Might be bad battery, or other hardware failure.

HTC One M8 has died. Only charging diode glows

Hey! Few days ago my M8 has stopped working. Just picked up the phone in the morning and it was dead (didn't charge it at night). Only charging diode glows orange when the charger is plugged in.
I've checked battery voltage with multimeter and it was 4,04V. Tried to hold power button with every combination with VOL+, VOL- and still nothing... Charging icon doesn't appear on screen. I've also checked every possible connection inside and everything is OK. Do you have any suggest? I really want to rescue it cuz it's the best audio recorder I've ever had Please help:crying:

Try holding just power button for a minute or so. Or try power+vol up for a minute.
Most folks don't realize you have to hold the button for so long, in this situation (battery ran down).

redpoint73 said:
Try holding just power button for a minute or so. Or try power+vol up for a minute.
Most folks don't realize you have to hold the button for so long, in this situation (battery ran down).
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I already tried hold every possible combination for more than 2 min.

stratocaster9724 said:
I already tried hold every possible combination for more than 2 min.
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Click to collapse
Try leaving it on the wall charger a few hours, and try again. Or try it with the charger connected.
I know you already tested the battery voltage as being good. But folks have had luck trying the various things I mentioned above. It's all you can do short of replacing the battery (which may not be the issue).

my device always red light is blinking. not open

M8 not booting anymore / Black chargeing Screen reboots

Good Morning,
I have a big Problem with my M8, it wont boot anymore. Yesterday evening my phone shut itself down because of low battery and I let it charge over night on a wall charger. But It wont boot, no matter how long I press the power Button/Power Button+Vol. up/ Power Button+Vol. down....
When I connect it with a charger, the orange led is turning on and the battery with the lighting inside on the black background is turning up. Nothing special until now. But it doesnt stay in this state, after 3 seconds the screen gets black and the orange led ist turning off for 1 or 2 seconds. After this the same process is starting aggain. The Led is turning on, the battery icon with the lighting poping up.....
Is my M8 dead or does someone know to fix this?

Hai96 said:
But It wont boot, no matter how long I press the power Button/Power Button+Vol. up/ Power Button+Vol. down....
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Click to collapse
I don't know how long you are trying to push the buttons (always help for you to be specific as possible when asking for help). But try holding power button only for a minute or more, as that is the length of time required in some situations. Many folks (myself included) have freaked out, thinking the phone won't power on, as they don't realize the button needs to be held for that long (and a minute is a pretty long time to hold the button - maybe a bit counter-intuitive).
If still no change, try a different charger and a different cable. Maybe the phone is not receiving proper charge.
I'm confidant you don't have a "brick" (such as damaged hboot, bad motherboard, etc.) since you at least get the phone charging graphic. I suspect the phone will boot (at least to the bootloader screen) as long as it has sufficient charge. Bad batter is another possibility. But seeing as replacing the battery costs money, and involves taking the phone apart; let's eliminate other possibilities first.