ran it in safe mode again under a different user name, ran spy-bot, regestry cleaner, and ad-aware se. found a lot of cookies and bugs, but no real viruses. took both of the hard drives out and installed them on my computer as slave drives. i can explore through them with out a problem and McAfee virus scanner didn't find anything on them.

assuming:
>>HDD's are ok b/c i can navigate and take files and install files onto them
>> its not a virus b/c ad-aware, spy-bot, regestry clearner, and McAfee didn't find anything suspect
>> not RAM, I tested it with a bootable program and it tested fine.
>> not video card, works great with safe mode and videos i played in safe mode.
>> not heat, case is open, runs fine in safe mode.

for the first time i hooked speakers up to it, when it boots to the bios, before it loads windows it plays a recording "Mother board tested fine, loading operating system". can i assume that the motherboard and CPU are fine then too? So what am i overlooking?