Diablo 3 crashes my entire computer every time i load it up now...
No warnings, just black screens, audio crashes about 10 seconds later, then another 10-20 and the computer restarts (with a horribly burning smell)...

Any ideas?
Only happens with D3, though i have a faint recollection it happened with D2 too...

Tried the reinstall thing? Updated drivers (graphics, motherboard and sound)?

Are all fans in your computer running? Does the graphics card feel hot to touch when you boot up D3?

Will check all the above and get back to you...

If your gpu or cpu maakes a beep noise that remain untill it restarts then its something with the drivers which cannot be fixed unless u missed a update....

With beep noise i mean like 1kHz sound or abit higher.

I sometime have this if i load a youtube video while playing minecraft

Updated Graphics driver (wasn't up to date)... still doing the same...
Not sure what my motherboard and shizzle are so not sure how to update them or w/e
all the fans are running... and it doesn't crash on anything else... JUST D3...

Sounds like you need to check D3 forums.