Thanks for the quick reply

I followed this topic exactly like it said:
http://www.osx86.net...x-10-6-amd.html
When I installed the Legacy Kernel 10.8 I chose the force 64 bit option so that I could use my 8GB ram. After that x86 applications would crash on start, so I followed this guide on how to make it work:
http://www.osx86.net...ps-working.html (I don't remember if it started before or after this)
I start with arch=i386 and force64.
Funny thing is I just left my computer on overnight downloading some stuff and it's fine. Obviously I think it's being triggered by something, I just have no clue what

Maybe it's the CPU overheating?
VIA VT1708S 8 is the audio of my motherboard. I'll search for something different than VodooHDA
Edit: I found this
http://www.osx86.net...ia_vt1708s.html for my audio, to fix the sound issues, but I don't know my device ID

Also, it says for me to put my device ID on
IOPCIPrimaryMatch, is that on the Info.plist contained in the kext?
Thanks a lot! 
Edit 2: Just happened again

Was surfing around trying to fix my audio problems (I was listening to music the for a while, so I don't think it's the audio) and when I tried to use spotlight it showed my same kind of white text on black BG real quick and rebooted on it's own :T
At least I managed to find the audio fix, going to try it and see if the reboots stop
Edit 3: Fixed the audio, but reboots keep happening. This time it happened as soon as I tried to attach a file to Facebook. Is it something with the hard drive, maybe?