I'm unable to launch Task Manager in my Windows 8(x64 bit) installation. It says "This app can't run on your PC". Probably my PC is infected, however none of the AntiVirus softwares are able to detect. Can someone please help?
Run regedit.exe, go to
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskmgr.exe and delete the string
Now you should be able to run Taskmgr again.