Nexus 7 not booting past google screen

[Android Central Question]

I tried to factory reset my Nexus 7 this morning and it took 4+ hours, it stayed on the "erasing" screen so I got bored and turned it off, I figured no factory reset takes that long. Now when I try to turn it on all I see the Google screen with the lock underneath. I can't even get it to load the bootloader (power + volume down). Nothing seems to be working. I tried to connect it to my PC with ADB + fastboot but its not recognized, my computer doesn't even detect it.

What can I do?

 

[Rukbat]

Hold the power button down until the device vibrates (it may take over 1 minute).

If you get to that point, the device may boot. If not, the computer should recognize it, and you can use fastboot to boot boot.img (which you pull from whatever update the device is on). If that gets you back to a normal screen, adb reboot bootloader and fastboot flash boot boot.img to replace what's evidently a corrupt boot image.

If booting boot.img doesn't work, you may have to reflash the entire firmware (https://developers.google.com/android/images#razor)

If your bootloader isn't unlocked, you can try sideloading the latest update (https://developers.google.com/android/ota#razor) through recovery.

If none of this works, and you still can't get the PC to recognize the device, try the XDA Nexus 7 forum, https://forum.xda-developers.com/nexus-7-2013, to see if anyone has any ideas. (Someone there came up with a fix for a hard-bricked Pixel.)

If all else fails, see if Google (or uBreakiFix if you're in the US) can give you any hope (like a reasonably priced repair).