GTX 550 Ti Fan not spinning suddenly & Monitor "No signal Detected"

Corvinus313

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Jul 13, 2012
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Everything was fine until now. As I was playing a game my monitor shuts down and I got "Signal not detected" and I was shocked at first so I rebooted my PC and to no avail but I can still hear Windows 7 starting music up and I can hear its still working then I popped open my CPU and I noticed my "Nvidia Geforce GTX 550 Ti's fan was not spinning and I was more shocked. So I detach it and cleaned it but not dissemble just blow and clean with brush. then Popped it back in still won't spin.

So I had this crazy Idea that trying to spin it using my hand like the old airplanes where you need to spin the blades to start and I span slowly at first but resumed to its full spin normally and then died stop again. and as soon as it stopped my monitor lost signal again.

Anyone who could help me with my problem? :(((