I am running Win XP Home. After running Malwarebytes and anti-virus, a number of things including Control Panel and command prompt will not open because an error message says the C:\windows\system32\rundll32.exe is missing. I ran recovery console to "expand" rundll.exe but it says that file cannot be created. I copied the Rundll32.exe from another running computer with XP and pasted into computer with issue but that did not help. DO I have to run a repair on this HP computer on the recovery side as my only solution?