Question : Winlogon.exe-Bad image error

I get this error on startup .... I have tried to go back and do a system restore, but still getting that error  

"Winlogon.exe-Badimage

The Application or DLL C:/Windows/System32/sfc.dll is not a valid windows image. Please check this against your installation disk settings."

Answer : Winlogon.exe-Bad image error

By the way, if the SFC /SCANNOW hadn't worked, the next thing I was going to suggest was a repair install...  Glad you got your problem fixed.