I run into a serious problem. When I tried to open programs, I received the error message: Windows cannot find '[The path to the program]'. Make sure you type the name correctly, and then try again. To search for a file, click the Start button, and then click Search. The problems are all the files still exist and a few programs can still be open including Internet Explorer. When I turned on my PC, McAfee detected a backdoor in c:\windows\winampw.exe. Please help.