Nexus 7 screen glitching few seconds after booted in. - Nexus 7 Q&A, Help & Troubleshooting

My screen glitches (think of TV static, but striped and colored similar to the background image) about 5 seconds after booting into android (after the nexus logo loads.
The tablet is fully functional doing the 5 seconds. After that, the screen glitches like above, and I can hear a faint sound from the nexus 7 that grows in pitch until it bursts and the device shuts down. Then, it tried to boot again and this process is repeated.
I don't know what caused this - I haven't used my nexus 7 for few weeks or so, and the last time I used it it was working.
The bootloader is unlocked but it is running stock 4.2.
I have tried booting into recovery mode and wiping data, but that doesn't fix anything.

Anyone know how to fix the issue?

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