ONE M8 Phone not powering off PLEASE HELP!! - One (M8) Q&A, Help & Troubleshooting

So I flashed SuperSU in recovery hit reboot and my phones in this dark backlight is on but it wont power off. Im really freaked out because i press down power and it will not power off. all help is appreciated

Connect it to your computer and reboot it via adb fastboot.
Sent from my HTC One_M8 using Tapatalk

Hold power + vol up for several seconds to force a reboot.
But if the phone did not properly reboot after flashing something, you will likely have to do something more than power off or reboot.
While the phone is rebooting (as the screen goes dark, and before the boot splash screen shows), let go of power + vol up, and hold vol down to get into bootloader. From there, see if you can get into recovery.

Related

Device is stuck at HTC logo Screen after reboot with no ROM installed

I wiped my phone and tried rebooting it to recognize my microsd card after wiping the phone and putting the ROM I wanted on the microsd card.
Now it is stuck on the HTC logo white screen and I have tried adb commands and nothing works and I have tried the light trick on the front camera (like on the m7) and that didnt work. I have pressed the power + vol down for a while now and nothing is working. what should I do?
edit: Right after I posted this I pressed the vol up and down button with the power button and it worked... I dont get it. anyways thanks!
You must hold volume up + power to reboot and then volume down to enter bootloader.
Sent from my HTC One_M8 using xda app-developers app
Happened to me yesterday. I was trying to install a recovery and the recovery never installed properly. So when I tried to boot to recovery, it just showed the box with the the red triangle.
The phone wouldn't restart or anything. Pressing and holding the power didn't work. No adb either. I was afraid that I would have to wait for ~70% battery to drain. LoL!!
But holding power eventually worked like 5 minutes later. *whew*
hold volume up + power to reboot and then volume down to enter boot loader.

[Help] My phone is hard brick

so reason, i'm delete file build.prop. my phone is hard brick. i press power + volume up it turn on logo htc and off. i press power + volume down. nothing happen and when i charge baterry. no charge. help me
Kent21 said:
so reason, i'm delete file build.prop. my phone is hard brick. i press power + volume up it turn on logo htc and off. i press power + volume down. nothing happen and when i charge baterry. no charge. help me
Click to expand...
Click to collapse
1. Unplug phone - VERY important
2. power on phone, doesn't matter if it is boot looping or whatever
3. hold vol up and power EXACTLY 10 seconds
4. let go of both
5. hold vol down and power till boot loader comes up.
You have no charge because you are running an old ver of twrp, get 2.7.1.0
an0ther said:
1. Unplug phone - VERY important
2. power on phone, doesn't matter if it is boot looping or whatever
3. hold vol up and power EXACTLY 10 seconds
4. let go of both
5. hold vol down and power till boot loader comes up.
You have no charge because you are running an old ver of twrp, get 2.7.1.0
Click to expand...
Click to collapse
hold vol up and power EXACTLY 10 seconds
tks for your help. i'm press 30s. my phone is rescure
Share how I fixed my HTC M8 with the same problem.
Hi,
I just want to share how I fixed my HTC M8 with the same issue. The method is the same but a bit different. I found the solution from googling the below link:
http://forum.xda-developers.com/htc...ter-download-mode-t2853100/page2#post62490577
The essential method is to keep holding down the power button and don't let it go while pressing on the volume up button to reset. At the very moment before the phone resets and shows the HTC logo white screen, switch from pressing the volume up button to the volume down button while holding down the power button. Or you can count 10 seconds and switch before the screen resets.
I hope this helps other people with the same issue.
an0ther said:
1. Unplug phone - VERY important
2. power on phone, doesn't matter if it is boot looping or whatever
3. hold vol up and power EXACTLY 10 seconds
4. let go of both
5. hold vol down and power till boot loader comes up.
You have no charge because you are running an old ver of twrp, get 2.7.1.0
Click to expand...
Click to collapse
Thanks, the pwr + vol-up 10 seconds before the phone hard resets, them pwr + vol-down got me back into hboot and recovery and then out of a build.prop issue.
I have no idea why this is a thing: Getting into the boot loader is usually easy. I can't imagine why when the system doesn't boot normally that the standard procedure to enter hboot changes.
regardless of retarded engineering on qualcom or htc's part, thank you an0ther.

Help: Safe mode

So i acceident flashed a theme (http://forum.xda-developers.com/showthread.php?t=2751173) for ARHD v 9.1 but I was running v8.1
Now my phone automatically boots into safe mode and and the system.ui keeps crashing, I trued getting into my bootloader with no luck, the only thing I can do i reboot the phone but then it just goes back into safe
is there anything I can do?
If it boots and just system.ui is crashing, try to connect via USB and fastboot reboot-bootloader.
Or else try to press power + vol-up for sometime and as soon as it reboots keep pressed vol-down it might need a bit of timing though
This comes in handy if you have a problem being stuck in Safe Mode ....
To activate Safe Mode: press power key until shutdown menu shows, press 'shut down' until another menu opens with Cancel and Restart.
To deactivate Safe Mode: press power key until menu shows, now hold power key - a toast box opens - keep power pressed and now hold Vol+ (toast says 10 seconds and counts last couple) it should reboot as normal.
Click to expand...
Click to collapse
Should make it easier to get out of
Sent from my HTC One_M8 using XDA Free mobile app

Help! HTC stuck in fastboot mode

Hi guys! So my aunt´s HTC Desire 816 had a problem with the power button. But I tried to shut it down by pressing VOL UP + Power button down to check if it really was the problem. It actually did shut down but it got into fastboot mode. Okay i went into the fastboot tab and pressed restart. It started up but it was in safe mode. So I shut it down but in the normal way, so power down and pressed on restart. But after I started it again it, again, went into fastboot mode. But this time I can´t restart it because the phone just wont get into the fastboot tab. The VOL UP button works but I can´t get into any other tabs like "show barcode" or "recovery" and so on.
BUT if I press the power button for 12 seconds the screen gets black but it just re-opens in the fastboot mode.
Anyone can help?

Htc stuck on white htc screen

hello friends i have a Problem my htc one m8 stuck on White htc Screen i dont can boot in the bootloader menu what i can do now ? My dvice is rooted , unlocked and it have the trwp installed. When i press power + vol-down Buttons nothing Comes and the vol-down key works.
greets marvin
power + vol down doesn't work if the phone is already on (even "stuck" on the boot splash screen). That button combo only works when powered off, or during a reboot.
Do the following:
1) Hold power + vol up to force a reboot. You may need to hold the buttons for a minute or so, in the current "stuck" condition.
2) When the screen goes black to reboot, but before the HTC logo screen appears (you have about 3 seconds) let go of the power and vol up buttons, and only hold the vol down button. Do not let go until you see the bootloader screen.
3) If you fail to get into bootloader, it's always due to getting the timing wrong. You either started pressing vol down too late, or let go too early. Just repeat Steps 1 and 2 above, until you get it right.

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