I have a Windows XP computer. It now displays this error message when I turn it on: "Windows could not start because the following file is missing or corrupt \windows\system 32\config\system." A service rep at PC Matic suggested I run Tweaking Windows Repair 3.1.2 to solve the problem. However, I can't get past the error message to use the repair program. Any helpful suggestions? If I eventually access Repair 3.1.2, what repair module(s) should I run first? Thanks.