Computer won't turn on help please

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Kenniiieee

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Feb 10, 2014
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Hey guys, I recently replaced the motherboard and CPU of my custom computer, everything was running fine until it randomly turned off (not shut down, turned off as if someone flipped the switch). I assumed it was from the CPU overheating so I left for a bit and turned it back on, it worked but after 5 minutes it turned off again. I left it until the next day and now it won't even start. The motherboard light is currently on so I'm not sure if its the powers supply or not. Also I moved the CPU and heatsink due to it not fitting correctly yesterday , would the coolant not setting properly be why it's not turning on?
 
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Vitric9

Vitric9

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Jan 26, 2014
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Some CPU's only take seconds to overheat and fry if there is no heatsink. If you took a heatsink of an older AMD CPU it would start to smoke in seconds. But most modern CPU's shutdown before they get damaged. That is probably not it. So You should try the method of checking each component starting with the power supply if you have another PC or motherboards this would help to see if the PSU is not working. Then try the motherboard and everything else till you find out if you need to replace something. Sorry i don't have a good answer.
 
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Kenniiieee

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Feb 10, 2014
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the cpu and heatsink fit right but im sure not if the thermal coolant set properly because i placed the heat sink on then removed it to rotate it. Would that effect the computer overheating?
 
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Kenniiieee

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Feb 10, 2014
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there is a heatsink on it but im worried that the thermal coolant which is between the heatsink and the CPU might cause an overheating problem.
 
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Beezy

Beezy

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Nov 4, 2013
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if you used too much it can, that paste is meant to fill tiny micro cracks and scratches on the surface of the heatsink and cpu. its not actually going to dissipate heat well, it just does a heck of a lot better than air at transferring heat. you want the thinnest possible layer while still getting full coverage of the chip, thats the goal. you can clean off the old paste from the cpu and heatsink, using iso alc at 70% or higher and a lint free cloth to clean off the surfaces. re apply, and see how it works.
 
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Kenniiieee

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Feb 10, 2014
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I'm 100% sure I didn't use too much, it was just the amount which the heatsink originally had. So I guess that kinda narrows down the problem to PSU

 
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