I have multiple boot system on my PC. Somehow after adding (back) Windows 2000 Pro, WinXP stops working with the error message: Windows 2000 could not start because the file is missing or corrupt: \WINDOWS\SYSTEM32\CONFIG\SYSTEMd startup options for Windows 2000, press F8. You can attempt to repair this file by starting Windows 2000 Setup using the original Setup floppy disk or CD-ROM. Select 'r' at the first screen to start repair. Upon research on past posts from google.com, I tried to copy NTLDR and NTDETECT.COM from the CD to the root directory of the drive that has XP in vain. I booted to repair console by with WinXP CD, Tried a few commands, but still got the same message. Actually, I don't really know what are things you can do to repair a system with repair console. So far, I have never successfully saved a system using the console. Please help. I'm tired of reinstalling system every couple of months. Thanks, Changhsu Liu The NOSPIN Group is now offering Free PC Tech support at our newest website: http://freepctech.com