Problems booting with Windows 98SE

I have bought a new motherboard and processor, took all of my boards out of my old PC and put them in my new one (ex. modem, video card, etc.). I went from a 500 MHz AMD processor to a 1.2GHz AMD processor. When I first tried to boot it up, it went blank, then I rebooted it, and went into safe mode, and it came up. Any ideas as to why this would be? Does this video card not support that fast of a processor? Do I need a different video card? I am stumped on this one.

I went into the CMOS and made sure everything was set right in there, and it all looked fine. I ran scandisk on it, and that messed it up. Now all I need to do is save the data on the hard drive, I guess by making it a slave.