Computer genius or not, we need much more info. Start by checking the crash info in your system's event viewer application and providing detailed system info.
I looked at the event viewer and it cake up with this:
Faulting application name: AfterFX.exe, version: 126.96.36.199, time stamp: 0x579afaf9
Faulting module name: atio6axx.dll, version: 188.8.131.5298, time stamp: 0x51414445
Exception code: 0xc0000005
Fault offset: 0x00000000006fa44b
Faulting process id: 0x263c
Faulting application start time: 0x01d2384a08cfc8e4
Faulting application path: C:\Program Files\Adobe\Adobe After Effects CC 2015.3\Support Files\AfterFX.exe
Faulting module path: C:\Windows\system32\atio6axx.dll
Is that what you need? I can get as much data as you need. I'm pretty desperate
Do you have already tried to run the app as Administrator and resetting all the preferences?
-To reset the preferences just start AE pressing Ctrl+Alt+Shift (Windows) or Command+Option+Shift (Mac OS)-
Yes, both. Heck, I've even set Administrator mode to default and nothing changes.
If I were you I try to uninstall and reinstall the app....