Problem with powerup/boot up

moronv3

Distinguished
Feb 28, 2011
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18,510
This problem started just the other day when I tried to install a second video card. The computer, upon powerup, wouldn't do anything. No beeps, no sounds, no video.

So, after removing the new video card (which is identical to the one I already have - Sapphire Radeon 5770) the same thing, only the fan on the heatsync started to run abnormally fast.

I replaced the Motherboard (an MSI P55-GD65) with an ASUS P7P55D-E LX, figuring that the motherboard was the problem, only to find that it isn't.

I tested the power supply - Corsair CMPSU-650TX - and it is fine.

I also noticed that the lights on the keyboard do not flash at powerup.

All this points to a CPU problem, but I hate to spend more money without being completely sure.