Hi, today I installed a new video card (Geforce 6600) on my computer, but unfortunately I had no extra power connector, so I unplugged the power for the cd and dvd drive to use the video card, everything had worked fine. When I restarted, during the hardware check in the BIOS it froze while checking the primary slave and froze, I went into my BIOS and disabled my second hard drive temporarily, but when I went to auto detect it to add it back in, everything went fine, I saved the settings, but when I rebooted, the hardware check showed no signs of the second hard drive. I opened up my computer to check if anything was loose, but it was securely fit. Is my hard drive broken or is it having compatibility problems?

oh gee, have you check the data and power cables to make sure they are all plugged in securely? Both end of the data cables?? Since you were in there..... WILL POST FOR FOOD.

I have checked it, they're all secure.

WinXP seems to have a habit of losing drives. I don't have a fix, but would suggest going to Disk Management to see what it says about the drive. You 'might' be able to restore it by removing it and rebooting.