Hello. I decided to reinstall Windows 2000 Professional on my laptop. Half way through the setup it threw up the message 'The file NT5INF.CAT on Windows 2000 Professional CD-ROM is needed. Type the path where the file is located, and then click OK.' The default location for the file is D:\i386 which I tried but with no luck. I looked it up on the internet and found that the file NT5INF.CAT relates to the CD-ROM drive. In other words Windows 2000 is no longer detecting the CD-ROM drive. See an explanation here: http://support.microsoft.com/?kbid=228852 I've tried using a Windows 95 and Windows 98 Start-up disk to copy the i386 folder from the Windows 2000 CD-ROM to the hard disk but it doesn't work, simply because its not detecting the CD-ROM drive! I've also tried restarting the laptop several times with the set-up disk in hoping it might resolve a 'timing issue' (see the above link) So, at the moment the laptop is stuck in a loop. Every time I restart it begins by saying 'Set-up is restarting, please wait' Then after a while it asks for the NT5INF.CAT file again. I've tried restarting in Safe Mode and also with a command prompt but it just loops. If I could get to a command prompt, could I solve the problem by extracting the file from the system folder on the hard drive? Here's another explanation from another website: 'Windows 2000 cannot find the file nt5inf.cat. The problem occurs when Win2000's Set-up looks for but can't find the CD-ROM drive because of outdated firmware on the drive itself.' So is the only solution out of this would be to replace the CD-ROM drive? Thank you.