After a minor, successful overclocking attempt (2.4G celeron to 2.68G), and then resetting everything back to normal in the BIOS, windows XP pro SP2 will not boot at all. After POST I get "windows could not start because the following file is missing or corrupt \windows\system32\config\system". I've read all the Microsoft info and threads re: recovery console and re-writing the registry etc. However, when loading up recovery console from the XP CD all I get is "C:\" rather than "1. C:\windows". If I try to change to the windows directory (using cd C:\windows) I get "access denied". I've run CHKDSK without any switches and it reports some errors on the drive. Does anyone know what is best to try next? I have another IDE drive spare and I am wondering If I should load XP onto it and then access the problem SATA drive from the new install in order to try and save as much data as possible before trying anything else? Should I then be able to run a repair install from the XP cdROM? Any advice greatly appreciated!