Ok I've gone back to the onboard sound and still had the first reboot in less than 2 hours. But this time I got a different minidump error:
This means a trap occurred in kernel mode, and it's a trap of a kind
that the kernel isn't allowed to have/catch (bound trap) or that
is always instant death (double fault). The first number in the
bugcheck params is the number of the trap (8 = double fault, etc)
Consult an Intel x86 family manual to learn more about what these
traps are. Here is a *portion* of those codes:
If kv shows a taskGate
use .tss on the part before the colon, then kv.
Else if kv shows a trapframe
use .trap on that value
.trap on the appropriate frame will show where the trap was taken
(on x86, this will be the ebp that goes with the procedure KiTrap)
kb will then show the corrected stack.
Arg1: 00000008, EXCEPTION_DOUBLE_FAULT
LAST_CONTROL_TRANSFER: from 00000000 to e2000785
00000001 00000000 00000000 00000000 00000000 0xe2000785
I was rendering a video in Sony Vegas when it restarted (hence the vegas9.exe). It often reboots while rendering a big video file. But it may also reboot while doing nothing CPU or video card stressful too.
I'm thinking of re-installin my OS later today.