Windows cannot access the specific device, path, or file.

When trying to open up ANY folder in windows explorer or when trying to access Control Panel, I get the error message: Windows cannot access the specific device, path, or file. You may not have the appropriate permissions to access them.

Many solutions to this involve Control Panel, which I can't access...a catch-22.

I cannot do a System Restore, the error: System Restore does not appear to be functioning correctly on this system (though I have done several successful system restores in the past on this computer)

SFC/scannow error: Windows resource protection could not start the repair service.

Virus Scan, Avira, picks up nothing.

TDSSKiller picks up nothing.

SysInfo.exe reveals nothing about my system...see below
Tech Support Guy System Info Utility version 1.0.0.2
OS Version:
Processor:
Processor Count:
RAM:
Graphics Card:
Hard Drives:
Motherboard:
Antivirus: None

I'm using Windows 7, 64 bit