majormastermind

the power went out and it fried my psu. it was a 400 watt. i replaced it with a 500 watt. i have a p4 541 processor and MSI PM8M3-V motherboard, with 1 gb pc 2700 ram. now my psu works, and the fans turn on, but none of the drives kick on(DVD, CD-RW,1 80GB, 1 120 GB, 3.5" floppy) and no bleeps when the pc turns on, nothing on the screen. i pulled out the ide cables from the drives and left the power cables in, and they sounded like they were working, and i could open the DVD/CD-RW drives. i'm tyin' to determine if it's the chip that's fryed, or the MOBO, or both. Ive tryed pluggin the ram in and out. PLEASE HELP!!!