i just had this problem i had to deal with, with a computer from my company, i ended up finding out it was a RAM problem after i spent 2 weeks and 450$ on new equipment...you may want to try tearing out the equipment and setting it up on a desk without the case surrounding it. you may have to find an old case to tear a power switch out of, but then it makes it much easier to find out the problem. also try taking the ram from your working machine out and testing it with the RAM from the broken machine. you may want to try the whol system outside of the case in case it is a grounding issuse. but i doubt it is that. i also doubt that it might be a PSU problem since 300W is plenty to run up to a 3.0GHz off of. if you need more help email me @
seeker@omega-byte.com