My mother asked me to fix her computer, his window XP is badly corrupted, so I tried to install Window 7 on her computer. However, the hard drive didn't show on the screen. I found it quite odd because BIOS detected it as IDE driver, and it's a SATA driver. I tried to install with old Window XP installation CD. Same thing, doesn't show on the window XP installation screen either. I tried to hook hard drive on other computer, and was testing with Window 7 XD and see if it was working, and it did. It shown on the disk screen. My guess that it's probably the BIOS that occurred, or perhaps other things. I have one hard drive, nothing more. Any suggestions?