Virus alert? Pop-ups? C: says nothing’s there? Desktop icons gone? Start Menu is empty?

Yeah, you got something nasty.

Boot into safe mode, fire up a cmd.exe/DOS box & let’s ‘attrib’ your files back to normal:

attrib -s -h c:*.* /S /D

Once that finishes, grab Malwarebytes & the latest definitions.

Install the app, run the updates & do a full scan.

Can’t run task manager?

.... delete the key for "DisableTaskMgr"

Security Center says Automatic Updates is off?

Start -> Run -> regsvr32 wuaueng.dll

More to come, as I try to keep this going.