I'm helping my brother put in a new mobo. He bought the MSI 651m-l mobo kit. Got everything hooked up, & there is power to the fans, but cd rom & hdd not booting up. He got a new 350 watt power supply. No luck. Called tech support & they weren't any help at all. Got a new mobo. Same problem. What the hell can be the problem? Went over all the jumper settings & connections. Everything looks fine. Please help. Losing my mind trying to figure this out.