Nexus 7 not booting anymore :-(

[Daniel See]

Hello guys out there,
I need your help and it`s urgent.

First of all let me introduce myselft, my name is Daniel, I`m 20 years old an I`m from Germany (so pls excuse mistakes I make ).

I got a Nexus 7 3G since the first half of the year and installed CM and TWR on it. This was no Problem and the Tablet did what it had to do.

After not using it a while (about a week ago), I wanted to switch it on again, but all it said to me was "booting failed" on the fastboot sceen. I tried to fix that issue, by reinstalling the tablet with the NCry toolkit, with the Nexus Root Toolkit and finally manually with the fastboot console. The only thing that happens is always if i have erased everything from the Tablet (inkl. bootloader etc.) and want to write the bootloader again, windows says, that fastboot.exe doesn`t work anymore.

Since the last time I tried it, the Tablet doesn`t even boot into fastboot. (only Black screen and some kind of very silent and shrill noise from the backside of the tablet)

I tried:

• Loading the tablet
• restoring the tablet
• restoring factory state with NCry
• restoring factory state with NRT
• restoring factory state with Console

I hope u guys can help me

 

[erwinlit]

I haven't tried this on a Nexus 7 2013 or the older version, but I had a similar problem using my HTC One X+ when I tried to root. I had to completely wipe everything off even the flash. I used ADB and followed the instruction in youtube on how to reflash using ADB and just installed a regular stock Android 4.2.2 with the ATT HTC One X Radios.