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Laptop restarts after every 3 seconds without any display

Last response: in Computer Brands
November 20, 2013 4:54:44 AM

I have a vaio and I was cleaning the cooling fan in my laptop, but when I closed the laptop and switched it on, it would keep restarting itself, in a 3 second cycle with no display. The cooling fan moves, I have tried putting Ram sequentially, and even without the hard disk disconnected, same thing happens. Can anyone please guide me what the problem is and how to resolve it?
a b D Laptop
November 22, 2013 5:33:46 PM

During the cleaning the fan connector may have loosened. As a result during the Boot sequence fan presence is not detected.

Check fan connector.