My htc one wont turn on

Fierce constantly restarting ' T-Mobile Support

https://support.t-mobile.com/thread/65935?start=0...

T?Mobile US, Inc.Mar 6, 2014 - My phone constantly restarts, at least a dozen times a day. ... I've had this happen on 2 different Alcatel One Touch Fierce's, after ... Can you try turning itoff, then taking these steps? ... Press and hold both the Power and Volume Up key ...saying Alcatel hasn't reported this issue, but even this forum itself has ... Why does my HTC One keep turning off and on. I...
Oct 30, 2014
My Alcatel One touch Fierce won't turn on it is...
Jul 20, 2014
My phone won't turn on. Help me, please.
Jan 3, 2014
More results from support.t-mobile.com

Performing a factory reset using hardware buttons
If you can't turn HTC One V on or access settings, you can still perform a factory reset by using the hardware buttons on HTC One V.
1. Press and hold the VOLUME DOWN button, and then press and hold the POWER button.
2. Wait for the screen with the three Android images to appear, and then release the POWER and VOLUME DOWN buttons.
3. Press VOLUME DOWN to select FACTORY RESET, and then press the POWER button.
[img title="unlock HTC ONE V hard reset forgotten password" alt="HTC ONE V hard reset" src="http://www.hard-reset.com/images/htc_one_v_hard_reset.jpg" height="350" width="180">
will remove any applications you've downloaded and installed. Be sure to back up
any data and files you want to keep before you do a factory reset.
Performing a factory reset from settings
1. Slide the Notifications panel open, and then tap Settings.
2. Tap Storage > Factory data reset.
3. Tap Reset phone, and then tap Erase everything.Performing a factory reset via settings
The most convenient way to do a factory reset is via the settings.
1. From the Home screen, press MENU, and then tap Settings.
2. Tap SD & phone storage > Factory data reset.
3. Tap Reset phone, and then tap Erase everything.

HTC One V not responding?
If HTC One V frozen and does not respond when you touch the screen or press the buttons, you can still restart it by press and hold the POWER button for at least 10 seconds, and then release it. HTC One V then restarts.

1.Check the device's battery level for at least two bars of strength.
2.If the battery level is low, charge the battery.
3.If the issue is not resolved, remove the back cover.
4.Remove the battery.
5.Wait 10 seconds.
6.Press and hold the W key.
7.While pressing down the W key, re-insert the battery.
•The device restarts and after approximately 15 seconds, the 'Recovery' screen appears
•Release the power button but *continue holding the home button*, for another 30 seconds.
Step
Thanks

1.Check the device's battery level for at least two bars of strength.
2.If the battery level is low, charge the battery.
3.If the issue is not resolved, remove the back cover.
4.Remove the battery.
5.Wait 10 seconds.
6.Press and hold the W key.
7.While pressing down the W key, re-insert the battery.
•The device restarts and after approximately 15 seconds, the 'Recovery' screen appears
•Release the power button but *continue holding the home button*, for another 30 seconds.
Step
Thanks

I would try flashing the kernel separately via fastboot and seeing if that helps

my htc freesyle wont turn on like what so ever, so i decided to plug my charger in it & i press the on button & it will turn on but the only thing that happens is it will keep flashing "oops an error has ocurred restarting..." & it will keep popping up & then when i disconnect the charger it will keep popping up for at least 10 minutes & then it will stop. can you help me figure out what to do, instead of getting a new phone?

You need to do a Factory reset:
1. At you Home Screen, press the Menu button then tap "Settings."
2. Scroll down to "Privacy" and select it.
3. Now tap "Factory data reset."

It might be something you have installed. I think the fastest way to get rid of such a situation is to perform a hard reset. You must know that you'll loose all your personal data, and how to do a hard reset, but here I go, anyway. There two ways to hard reset your Diamond.
Software way: Go to 'Start > Settings > System tab > Memory > Clear Storage tab', enter password '1234' and tap OK.
Hardware way: Turn your device off. Then, press and hold the ENTER key. Whilst keeping this key pressed, briefly press the POWER button. Release the ENTER key when a waring screen comes up. Then, press the VOLUME UP button to hard reset your device, or any other key to cancel the hard reset procedure.
Hope you are able to sort your problems out.
Cheers! Carlos

Hello, These methods have been confirmed on my phone with both T-Mobile's ROM and Excalibur (S620 original ROM)

Turn the hand-held off, hold the two soft keys (the dashes to the left and right of the phone buttons) hold the power button for 1-2 seconds and then release the soft keys. It should prompt you to clear storage. The “send” button is considered as the green phone button.

Let us know if you have any other questions. If this information was helpful, please take a moment to rate the solution. Thank you.

If you have all your items saved to your computer with Active Sync, then do a master reset:
HTC Touch hard reset 14 January 2008

• Power on.
• Press and hold buttons marked 1.
• Press and release 2 with stylus.
• Release buttons marked 1 when menu comes up.
• Press directly down on center dpad, marked 3.

You can also get tips & tricks from www.htcwiki.com
It has the latest and great updates, software, even known issues if you ever come across this. HTC does recommend that you do a master/hard reset once a quarter to keep it moving smoothly. Also, ensure you don't have a lot of open running programs. Perhaps once a day, clean the cashe and history. Do a soft reset (aka battery pull) once or twice a week. All depends on how hard you play with this lovely PDA device!