Not sure what it is but it seems when my computer is put on with a big load (not in general but for it) it will restart. Like I'll listen to music, be on MSN and be on the internet and it will restart. Also, sometimes out of nowhere, some person will start talking in my speakers. It's like some advertisement or sometimes even a song and I'll close everything and it will still be going. Any help is appreciated.
This could also be a hardware issue. After running spyware programs and anti-virus software in SAFEMODE. Check to see if your powersupply and memory are fine. Run a memory test, there's freeware out there that you can download and run this test.
restarts, most likely its your PSU, or some dodgy RAM. voices... might need a psychiatrist for that, or maybe scan for virusses/adware