I am hoping someone can help me out on an issue I am experiencing. I have a Dell Dimension 4600C that I am about to throw out the window and I do not mean that figuratively. The desktop stopped working one day and I contacted Dell support so they could tell me that I need a new power supply and a new motherboard. Going the cheap route I ended up getting a power supply, installed it tonight powered up and everything was working fine. I noticed that my McAfee was not up to date so I started with the update. Everything worked fine and after the 4th reboot I got the following message: When I boot up I get the following message: windows could not start because the following file is missing or corrupt: \windows\system32\config\system Now back to dell chat room. The guy tells me that I need to install the Windows XP recovery disk which I do and follow his steps and when I try to repair using the recovery console (c:> chkdsk /r) I now get the following message: The volume appears to contain one or more unrecoverable problems. The only thing I can remember is that right before the 4th reboot I inadvertantlely allowed mcafee to allow a registry change. Could this be the problem. Dell is telling me I need a new hard drive but I find that hard to believe as it worked fine until the registry change. Any help on this issue is greatly appreciated.