my power supply blew and i got a new one after i installed it i went to turn the computer back on and i had no video. i cpu powers and the drives start to run but i can't see anything. someone told me to clear the cmos so i did that. i was also told to reseat the ram and video cards. i did that and still no luck. i believe it is a bios problem but don't know how to fix it. it's a spacewalker with a petium 2 in it. and i have tried other video cards but they didn't work either.