The other day I was on my computer and I was going about my normal business. Then the computer froze up, so I gave it a few minutes but alas, nothing. So I gave it a few more minutes and it had absolutely crashed, even my music had stopped playing. So I hit the reset switch. When it boots back up now I get to the Windows loading bootscreen and then it blue screens and then shuts itself off. I have booted it up again in safe mode, but the same result. I then pulled out my Windows XP CD to see if I could do a repair on it. So I boot to the CD, I press Enter to install Windows, I press F8, It then says it's checking for previous versions of XP, it then blue screens saying that there is a registry error. I've also tried repairing it, that also blue screens. So the hard drive cannot be accessed at all from the Windows CD. So to check if it may be the hard drive I pulled out an old 40GB hard drive, installed windows on it and set my main hard drive as a slave. My main hard drive is fine, I can access all my files. Now I know I could just reformat the hard drive from the cmd, however I do want to. I want to re-install windows onto the main hard drive (which is set to slave) without loosing files. I have read about winnt32.exe, might this help? I do not know how to go about the parameters. Please, any suggestions or ideas would help.