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Computer Cycling on and off at startup

Last response: in Motherboards
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January 25, 2013 5:51:34 PM

I built my computer about six months ago and suddenly today when I tried to turn it on, it would cycle on and off. It was working just fine this morning. My computer if perfectly clean since I had used compressed air to clean it a month before and it had been working perfectly fine until now. I have looked at my POST LED indicator on my mobo and it has no error messages. It only goes up to early memory initialization and then repeats the cycle. I noticed that the PSU makes a switch sound when it turns on and off, is this normal too?

Specifications:

MSI Z77A-GD65 mobo
XFX Radeon 7850
Intel i5 3550
g.skill Ripjaws 8GB
Seasonic 650W 80PLUS PSU
Crucial M4 56 GB SSD
Seagate Momentus XT 750 GB

Solutions Attempted:

Reset CMOS

start with only essential components and it still won't turn of properly

tried another working Seasonic 650w psu

Tried 1 stick of RAM

Tried w/o my ssd and hhd in
a c 557 V Motherboard
January 26, 2013 6:22:08 AM

Is it the same if starting with only CPU and CPU fan connected?
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January 26, 2013 12:52:13 PM

alexoiu said:
Is it the same if starting with only CPU and CPU fan connected?


Yes. I'm thinking it might be the motherboard frying out.
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