[Nexus 7 Q&A, Help & Troubleshooting] OldDogEyes:
Yesterday my N7 'crashed' on me...

Device Info: N7 32gb non-3G, Android 4.2.1, Rooted via Toolkit, Stock, CWM v6.0.1.0 (non-touch), Bootloader 4.1.3 Unlocked (of course)

Recent changes: I had initially installed a 2nd account for my son to play games on without messing up my progress shortly after 4.1.2 launched... I immediately noticed that the N7 seemed more sluggish but put up with it so he would have his own account. Well he hasn't used my N7 for weeks and I hoped that maybe if I uninstalled that 2nd account that the sluggishness would go away... So a few days ago I went into settings and removed it... Not sure if it made a big difference. I only mention this because I am not sure if it had anything to do with what happened yesterday...

The Crash: Yesterday when I came home with my N7 I heard some notifications letting me know that it had logged into my home wifi and had connected with Gmail... About an hour later I went to use the tablet and when I hit the power button I briefly saw the wallpaper and unlock pattern. Almost immediately the wallpaper disappeared and was replaced by blackness. I could still see the unlock pattern and then the screen 'shifted' - got smaller, bigger and then bam... the tablet reset. This whole thing took just a few seconds.

After that it seemed to be stuck at the nexus logo/animation... I assume it was stuck in a boot loop. I let it go for a good 30 minutes and nothing changed... still had the animation. At that point I did the following:

So I rebooted into the bootloader and rebooted from there... same result.

So I rebooted into the bootloader and then recovery and rebooted from there... same result.

I gave up in frustration and powered it off from the bootloader and went to bed.

Today I went back into recovery and did a Nandroid backup. It gave me no options, it just did a full backup. Based on the amount of free space that was reported it seemed as if my SD card partition was intact. Up to that point I didn't know if the glitch maybe wiped everything out...

After that I formatted the /cache, /system and /data (not sure of the order). Then I tried rebooting and now it won't go past the Google screen with the unlock icon.

So I went back into recovery to see if I had a zip that I could flash. The only one there on my SD card that I can find is the CWM/Superuser one from the toolkit. That file is named CWM-SuperSU-v0.94-signed.zip and is in the root directory. I checked and the Nandroid backup seems to be where it should be...

So I figured that I need to flash the factory image but cannot seem to mount the N7 via USB. When I plug it in my Windows 7 machine, Win 7 lets me know that it has installed the "Nexus ADB" driver that my N4 installed and seems to be connected. But there is NO /USB in the Mount menu in Recovery and Windows 7 doesn't see the N7 from the My Computer/Windows Explorer.

My Questions:

Do I need to 'push' a stock image via ADB?

What ADB command do I type to see if the N7 is in-fact accessible from my Windows 7 machine?

I am assuming that when I formatted the three partitions mentioned above I wiped the boot ability of the N7. Is that why it won't go past the Google screen now?

Did I do anything wrong in what I've done so far?

Thanks in advance!