I had the same issue as described here. I followed the process outlined, but I still get a black screen from time to time. It does seem to go in spurts as I will have them one after another for 20 minutes then run smooth for 40 hours. It does, for some reason, seem to happen more on power up when the machine is 'cold'.
But, today I got an error. A bonified error. I looked at it and it is probably the same as the German post above. But, here is the details.
In the System Events Log there are 4 errors that are back to back.
Oldest to newest:
Event 14 : source: nvlddmkm
Details: Blah text on how the event id 14 from source nvlddmkm cannot be found...
Device Video5
CMDre 00000002 000000fc ff1fe124 00000007 00000000
Event 14: same source
Device Video5
CMDre 00000002 00000094 ff1fe138 00000007 00000000
notice different data
Event 14: same source
Device Video5
CMDre 00000002 000000a4 ff1fe131 00000007 00000000
Event 14: same source
Device Video5
CMDre 00000000 00000000 00000000 00000001 00000001
Then I get the info event to say it recorded the event and then a warning that the display driver nvlddmkm stopped responding and has successfully recovered.
Then 8 seconds later I get the same warning: The driver has AGAIN recovered and the video returned to 'normal'
This is the FIRST time the video blacked out, then came back. So, I dont know if this error is a new issue, or it is just the first time that the system could recover. But, that is what I got.
<message edited by ghostbear on Tuesday, October 12, 2010 1:11 PM>