UAC blanks screen completely - totally black

Whenever I run something that has the little shield icon on it or a
command like MSConfig, the UAC beep sounds and then my screen goes
completely black. I cannot see anything. My computer has not locked -
if I press Enter, it returns me to wherever I was previously.

This has not always happened - just started happening recently. I have
not installed any devices, drivers, or apps recently though.

I really can't believe Microsoft would allow UAC to glitch so badly. I
probably will just end up turning it off.

NOSLife wrote:
> Whenever I run something that has the little shield icon on it or a
> command like MSConfig, the UAC beep sounds and then my screen goes
> completely black. I cannot see anything. My computer has not locked -
> if I press Enter, it returns me to wherever I was previously.
>
> This has not always happened - just started happening recently. I have
> not installed any devices, drivers, or apps recently though.
>
> I really can't believe Microsoft would allow UAC to glitch so badly. I
> probably will just end up turning it off.
>

You have an nVidia graphics card? Their drives are known to cause this
sort of thing.