Black screen and mouse, cannot go into vista

Okay, I am dual booting Vista Home Premium 32 bit and 64 bit on seperate drives. The 64bit is on a 150GB Raptor. And the 32bit is on a Seagate 500gb 32MB. I was on my 64bit drive doing some video crap. When i got some updates. So i did all that to get it out of the way. And on restart, it did "replacing security file for 1 " (something along those lines) and went all the way to 160,000. So i let it do its thing, and the 64-bit drive was fine. So when i switched over to my 32-bit drive, everything goes as usual, i hit f8 on boot up, select the drive, and boot it. I get the windows progress bar, then it goes to a black screen with my mouse. And i can move the mouse. Everything with my comp is fine. I just cant log in. This is the second time this has happened. It happend to my 64bit drive as well. So i just re-installed and all my old files are under "windows.old". I just need to know why this is doing this. The frustrating part is not knowing why this is happening. I dont think its the hardrive or vista burns because they are both different drives and different OEM cds. Ive tried clearing CMOS and that didn't work. I should also add that after this recent issue, i updated my BIOS. Here are my specs and i hope you guys can help.

EDIT: booted in safe mode and it hangs on crcdisk.sys
EDIT 2: Repair install said nothing is wrong.

Q9450-Zalman 9700
Maximus Formula-BIOS 1207
Corsair 2x 2GB 8500C5DF
150Gb Raptor-64bit
500gb Seagate-32bit
500gb WD storeage
Seasonic 700w
Cosmos 1000
HD 3870