Earlier this week I got 10 of them as usual the don't switch your PC off message came as they were installing.
Then my PC powered off.
The following day on power up my monitor (flat screen) didn't work, I tried a spare, still no joy.
I then tried an old crt monitor and could finally view what was going on.
I did a system restore to an earlier point all went well, could use my flat screen again, until windows updated.
I ended up with the same problem, obviously something in the updates seemed to be corrupting my drivers.
My Graphics card is an Nvidea gforce 7900 gs, so I downloaded a replacement set of drivers, installed and everything is now fine, until the next time...
So if you have had any monitor problems since the last dratted windows update it may be worthwhile doing something similar.