xp system running hit cmd and regedit are not able to find files

Users questions: Cmd and regedit knock operation are not able to find files, but in the browser to find c: * windwos * cmd.exe and c: * windows * regedit.exe double and still not able to find the file. The extension of these two files co m does fit the implementation, but many installation program does not recognize regedit.com, how do?
Experts answer: is obviously IFEO kidnapped solution: the REGEDIT.EXE into REGEDIT.COM, open, delete [HKEY_LOCAL_MA CHINE * SOFTWARE * Microsoft * WindowsNT * CurrentVersion * ImageFileExecutionOptions] this. And then change back, you can use a PS: This allows you to modify the A program run programs Shique open B, if B is a virus program, then ... because the B program is deleted, will be the first of this phenomenon. Well, best to kill the drug after complete deletion, because if the virus is still running , then removed it would add.
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