Ctrl-Alt-Del (task manager) and regedit no longer working as expected. Could this be a virus?

Ctrl-Alt-Del (task manager) and regedit no longer working as expected. Could this be a virus? Recently, I tried to Ctrl-Alt-Del, but I found my administrator disabled. I tried to edit the registry, but regedit is disabled, too.
Asked by: Guest \| Views: 248

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Guest [Entry]

"If your task manager currently isn't working, check out AnVir Task Manager. It is defined as a ""task manager replacement"" which has a few more features than the regular task manager:

Process Explorer is also an excellent replacement but the interface is very different:

You can use either tool temporarily until you remove the virus.

If you need a free anti-virus, check out Avira AntiVir. I'd do a full system scan with Avira as well as MBAM (Malwarebytes' Anti-Malware)."