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Background:
I have been having some problems with my Windows registry today. It looked like antivirus had corrupted my licensing data. When I booted in to windows I would receive a message about:
"an unauthorized change was made to windows 7"
and telling me I needed to repair it. I followed lots of tips from windows forums, but I just kept hitting permission errors and nothing worked. Anyway, I managed to fix this by using an activation crack.
However, when I now boot-up Windows, just after the password screen (I dont bother with a password on my home PC) the signal to my monitor cuts off temporarily for a few seconds, and then turns back on again.
I installed the latest driver for my graphics card, but the problem still exists. It must be something to do with the registry/the activation crack did.
What could I do to repair this? When I had the initial problem I did use a Windows 7 repair disk and the startup repair tool, but it couldn't find any problem.
Update:
Found this which is the same issue:
http://www.overclock.net/t/1487225/monitor-turns-off-briefly-then-back-on-after-starting-windows
and somebody replied:
As far as I know its basically happens because the systems switches over form "driverless mode" to using the nvidia drivers.
user997112
Posted 2014-12-15T15:31:29.690
Reputation: 113
1Whats with the downvote?? – user997112 – 2014-12-15T15:41:45.967
Could it be caused by a resolution change? Like for example when you switch to a lower res using Windows "Display" does it take that long for the monitor to figure it out and display the new res? – Psycogeek – 2014-12-15T21:22:57.600
Hi, i never had this problem before the registry issue. Is there anywhere in the registry which could be responsible for this behaviour? – user997112 – 2014-12-16T17:09:53.870