I can't use Task Manager on Windows 8.
Whichever way I open it (keyboard shortcuts,
System32, taskbar right-click menu), it only stays open for second. It does not simply freeze and crash as within the second it stays open I can click the 'More details' button and it would begin to respond before it closes.
sfc, it reported finding problems it could not fix. I manually replaced all the problematic files in the
CBS.log; this fixed other problems I'd had but Task Manager still wouldn't remain open.
I don't have Restore Points that point to before this started happening.
I tried opening Task Manager in Windows' Safe Mode and in a new user account; it still wouldn't work.
Also, I'll post and reports/logs you may need.