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for a couple of days my 2 monitors get blackscreened for about 10 seconds every few hours. Don't really know why it is so. The Monitors state to not recognize any video-/grapicsource. I installed all the new windows 7 (64-bit) updates about 2 days ago and as far as I remember the issue started some time after the installation but before I restarted my pc for the first time.
Btw I already updated my graphic card drivers to exclude that one as a reason for the problem.
The monitor also turns off for a longer period of time if I leave the pc for ~1 hour but that's not the screensaver since that one has an animation at my pc. Also, in that case the monitor wouldn't say "no source found" and turn blue for a few seconds.
Any suggestions from you guys?

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