PC in a reboot loop

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sazma9

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Jan 8, 2014
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After having my PC for over 18 months now, it has decided to go into a reboot loop.

Upon pressing the power button, everything appears normal; fans spin up, lights come on, and it sounds like the disk spins up too. But after about 5/6 seconds, after nothing appears on the monitor, the system crashes and reboots.

Firstly, it isn't software, i've tried several other drives with operating systems on, and the problem continues.

My motherboard gives me an error code of 55, which apparently relates to RAM. However not only have i tried another set of ram sticks, but i have also tried varying the order the sticks go into the slots, and the problem still continues.

Has anyone come across this before?

(I chose the category of motherboards for this thread as that is what i think the problem most likely is)
 
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sazma9

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Jan 8, 2014
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Does it make a difference that i have an all in one water cooled cpu cooler? Or is it still worth applying some paste?
 
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JeckeL

JeckeL

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Jul 19, 2009
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Try this first:

Unplug the power cable from the PSU/wall outlet, open the case up and disconnect all power connectors that come from the PSU to all different components (mobo, drives, GPU, etc), once that is all disconnected press the power button about 10 times and on the 11th time hold it down for about 30 seconds. After letting go, hook all cables back up and try to boot
 
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sazma9

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So in the past couple of days i've been waiting on some thermal paste to arrive, and i've just tried reapplying the paste. Unfortunately the problem persists.
 
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plaintuts

plaintuts

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May 5, 2014
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If your computer has onboard graphics Then plug the monitor there and remove the Gpu..

If you already tried a different set of ram then,
The motherboard or power supply could be at fault here..

The cpu doesn't easily die compared to other components..

If you dont have a onboard graphics Then you can only fully test it with a different power supply.
 
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sazma9

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Jan 8, 2014
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I've already tried using my graphics card and onboard graphics. My power supply is powering all the lights and fans in the system, so i don't think it is that.
 
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sazma9

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Motherboard: MSI GD56 Z77A
CPU: i5 3570k
CPU Cooler: Corsair 120mm All-in-one
RAM: 8GB Kingston HyperX Blu (2x 4GB DDR3)
Graphics: AMD 7970
Power Supply: Cooler Master 1050W

And various drives for storage and boot, but the drives aren't the problem as i've tested all of them.
 
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plaintuts

plaintuts

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May 5, 2014
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Try this first..

Remove the pin connection to the power and reset switch of the case..

Remove the cmos battery.
Unplug the computer from the wall socket
Use a screw driver or something metal to short the two pins for the power switch for 30 mins.. While unplugged from the wall socket..
(this is to drain the capacitors)

Next plug the computer to the wall socket,
Dont connect the power and reset pins for the case switch.
Use a screw driver to short the power pins to bootup the system..

Post back with the results.
 
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sazma9

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Jan 8, 2014
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Just to be clear, i need to hold a screwdriver across the reset and the power pins on the motherboard, and leave the screwdriver resting on the two pins for 30 minutes?
 
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