I was having boot up issues; figured it was virus/malware-based, and ultimately pulled the hd to slave it elsewhere and do clean install. Upon putting it back in, I get a green light on the MB, next to CPU fan, but nothing else happens. I tested the PS with a PS tester, and all connections seem to be getting proper power. Doing this also means I checked the connections to the MB from the PS. Outside of a poor grounding (and nothing should have changed since I pulled the hd), would it have to be a MB (capacitor, etc.) gone bad problem? Am I right that if it were RAM that fans would spin and it would try to post, but just wouldn't? Thanks!