HTC M8 would not boot, black screen, no charge led - One (M8) Q&A, Help & Troubleshooting

I have had the phone for around a year. Haven't flashed or rooted it to non-official ROMs. It had boot loop issue a few weeks ago which was solved using RUU to the official ROM. It worked fine until today.
Today, while using the camera, the phone stopped responding to touch and a message said that camera is not responding.
I shut down the phone using the power button.
When trying to restart the phone, it did not light at all.
The phone had a high charge when this happened.
Connecting to the wall does not light up the charging LED.
Using power + volume down or power + volume down for several minutes does nothing. Neither does shining light on it.
When connected to the computer, it loops Connected -> Unrecognized USB device -> Disconnected after 20 or so seconds.
Any ideas?
Thanks!

Try charging for several hours (overnight) and see if charge LED appears. Also try the button combos again after charging overnight. Use wall charger (not connected to PC, which can be too slow).
Try the button combos with and without the wall charger attached. Also try power + vol up and vol down (all at the same time).

When I connect it to the wall for a long time, the LED sometimes flashes orange and again a second later and the loop repeats every 20 seconds, similarly to the rate of the unrecognized device when connecting to USB.
Last night, there was a stage where it got to a constant orange LED but in the morning it was back to nothing or the slow double orange flash.
It is still under warranty and if it doesn't get fixed by itself, I'll hand it in for testing on Sunday.

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My rhodium dead?!

Hi,
I recently (about 2 hours ago) encountered a strange problem. Turned on the phone as usual in the morning, got it on, some warning about the battery level together with a sound appeared. Connected to USB, started to charge (orange led on), after 2-3 minutes turned on, battery level warning, turns itself off.
Right now when I press the power button the phone does nothing, the orange led starts to light when USB cable is connected and about every 2-3 minutes it shows the touch pro2 logo, the red version info and turns itself off again.
What happened?!
Try plugging it into the wall charger and letting it charge for longer?

phone not booting and led blinking

Hi guys,
Yesterday suddenly when i was in a call my (htc desire 820 dual sim) phone got off after that i tried to restart it went to bootloop and i tried voldown+power button and i was able to enter fastboot mode once i enter after few suddenly phone made a strange noise and it got off now the led is blinking and i tried charging it for one hour ,tried pressing volup+power button,voldown+power button,both volup+voldown+power button there's no response if i connect it to pc the phone led is blinking and pc isn't detecting my phone if i connect it to wall charger the led blinks but there's no other response please kindly help me to resolve the issue
??
thanks in advance
Orange light blinking and phone won't turn on?
Hi guys give this a try next time you're phone has a orange blinking light. Especially for those phones that have a non removable Battery in there phones like htc 820 or an iPhone. Ok so unplug your phone press the power button 10 times at 1 second intervals to discharge it, then hold the power button for 16-30 seconds until it turns on. Then plug it up to the charger to properly charge even if it says it's charged. Hope that helps you guys out.
Credits goes to Charkoftboo member.
xpvijay said:
Hi guys,
Yesterday suddenly when i was in a call my (htc desire 820 dual sim) phone got off after that i tried to restart it went to bootloop and i tried voldown+power button and i was able to enter fastboot mode once i enter after few suddenly phone made a strange noise and it got off now the led is blinking and i tried charging it for one hour ,tried pressing volup+power button,voldown+power button,both volup+voldown+power button there's no response if i connect it to pc the phone led is blinking and pc isn't detecting my phone if i connect it to wall charger the led blinks but there's no other response please kindly help me to resolve the issue
??
thanks in advance
Click to expand...
Click to collapse
WOW... my phone is alive!! All i did now was:
I tried charger from my galaxy core (same amperage like htc 820 = 1A) but i used original cable from my htc charger. The led was still blinking so i decided to "knock" the back panel (around the place where connector from batterry is), then i pressed vol and vol- and power button for around 20-30s, then i pressed vol- and power button for around 30s then i released everything, then i pressed power button for 10sec and my phone turned on!!! im so happy! my phone is still on warranty but i live abroad now so i need to send it to my country to start warranty procedure but no im free of this!
Thank You guys for pushing me to try once more the magical tricks with cables, chargers and buttons
Btw.
My batterry is now 100% = that means it was charging all the time?
i don't know what was that but i am happy that it work now.
Hii...I'm facing exactly same problem...Did you fix it?
My phone goes to bootloop everytime I start it. HBOOT and Fastboot are working fine although!

Htc 10 charging problem

Hi every one,
last night, when my phone was fully charged and the green notification was on, I unplugged it, but suddenly I saw that my phone didn't run. Therefore, I pressed and hold the power button, but unfortunately, my phone didn't turn on. I plugged it again to the charger and saw that an orange light was blinking, and the phone was showing an empty charge icon. I pressed the power button again while it was on charge, and it tried to turn on but after few seconds it turned off. I was really nervous and distressful as it was for the first time to me.
I let it to be charged for minutes, and, then, I tried to turn it on again. This time nothing happened. I also tried the volume +/- and power button to reboot it but they didn't work.
Now, when I unplugged and plugged it again, I can't see even that orange light.
Please, help me.

New pixel C not charging - can it be charged in recovery mode?

This is the third new pixel C I've tried this week(!) and they've all had the identical problem.. It would be incredibly bad luck to have 3 defective devices so I'm wondering if this is a known problem and there's something I can do to fix it.
The device will never go further than flashing the google logo very briefly. The light bar shows all red for a fraction of a second, then nothing. After this point the display is blank and the light bar is dead and does not respond to tapping.
If I go into recovery and select 'turn off device', the light bar is responsive but just shows a single red segment.
I've also tried the usual 10-20 seconds power off and the volume up/down/power switch combinations.
Is there any way of getting the device to charge from recovery mode?
Wonder if it's reasonable to assume that recovery mode consumes less power so the problem is a deeply discharged battery and I think that is a significant issue with Lipo cells. I assume your " 10-20 seconds power off and the volume up/down/power switch combinations" are those recommended at https://support.google.com/nexus/troubleshooter/3337561?hl=en-GB&ref_topic=6023299
Is the Pixel C charger "intelligent" ? - try a basic charger or a PC if you have a usb A/C cable?
Booted to recovery, powered it down from recovery and left it 2 hours. After a couple of attempts it booted :victory:
I left my pixel c on charge for the night (usb charge hub, 5v/2a, way I've used to charge since I got it), pixel c keyboard attached in the laptop position.
This morning I got up and press the power button to check it is charged and it was sitting on 0% saying it was charging... Power it off, leave it plugged into the wall charger that came with it and 3hrs later still nothing.
Recovery, turn off, closed it up so the keyboard is in put in the bag move, now checked it is charging, 1 red segment flashes. See what happens next. Never had an issue in the previous 7 months of using this device. Very odd, hope it is ok soon... Best Android Tablet I've had, don't really want to buy a new one...
Edit: looks like it is all good. Phew!! Bit strange.
Just Recieved and the same
Another one here with the same "issue" or strange thing that it does before start charging
I have the same issue. I can't get the thing to turn on at all. How do I even get it into recovery?? All I get is the google logo for 1 second, then the bars turn red and everything turns off.
Power button does nothing. Power+Vol Down does nothing.
I have a similar issue! Welcome to 2021. I plug in to charge, lightbar goes to Google colors and then red. It'll do that back and forth without turning on. Any ideas?
Had same Problem. Press vol up and down and then Connect the charger. Then I coud boot in recovery mode. From there rebooted in Android and charge up

One Plus-3 Black Screen. No LED No Vibration. Hardbricked?

So I had kept my oneplus3 on charge at around 10:00 Pm yesterday and fell asleep. Woke up around 12:00pm to see it was fully charged so I unplugged the charger kept the phone beside me and went to sleep. Today when I woke up I saw that the phone has a black screen and is completely dead. The LED light is not on. Plugged into the charger no response. Tried holding power button ..nothing. No vibrations or home button lights
Currently, there is nothing going on with the phone. No flashes on screen no LED. Absolutely nothing. Tried connecting to laptop (windows 10) dont see anything. It was working perfectly fine last night and i had used it for nothing but music then.
Question is.. is the phone hard bricked or completley bricked? what might be the reason? I searched youtube only to find 1 person with similar problem who had said that he kept the phone for 48 hours and when it was completely discharged he pluged in charger again and it started working.
I am confused. Have a lot of work documents inside and what if it stays the same after 48 hours?
Appreciate any help on the matter
update: Tried plugging in the charger a few min ago. The led turns red and Vibrates. Nothing else
Update 2: so after 24 hours of setting the phone aside. i plugged the charger and it went into charging. But now am facing a new problem. My bootloader is unlocked and the power button is busted hence whenever I press volume down and plug-in the charger it takes me to bootloader warning screen from where either it goes into charge or i press volume key and it goes into option which I again cant select cause power button is busted. Tried holding down the power button and connect to laptop(windows 10) no device detected and it works like normal charging. Tried to charge for a few minutes unpluged charger and start again .. it was stuck on oneplus screen. Any ideas??

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