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After applying new thermal paste, computer will not boot up

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  • Computers
  • Thermal Compound
  • CPUs
Last response: in CPUs
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April 22, 2014 2:05:54 PM

I applied new thermal paste due to overheating while using the stock heat sink and cooler ( for the A10 6800k, My PSU is a CX430 Corsair ) and used the pea in the center method. It took a few tries before using this method, as I attempted to coat it completely myself, and managed to get some on the side of the CPU. I cleaned it off, checked nothing was on the pins or that they were bent, and put it back together. I tried the pea method after getting the same results, being that it would not boot up after recoating the processor. I get a red blinking light in the front of the computer ( The case is an Antec VSK 4000 ) and could not find anything on it. The Fans are working ( 3 Including the PSU fan, CPU fan, and Case fan ) Any ideas?

I would include pictures if I had any idea on how to do so on an iPad

More about : applying thermal paste computer boot

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a b à CPUs
April 22, 2014 2:14:42 PM

Thermal paste, if improperly applied, will not affect whether or not a computer will turn on - chances are that when you connected all of your power cables, you either improperly connected them or didn't secure them all the way. In this situation, I would disconnect and securely reconnect all of your power cables.

Also, if your computer is overheating, simply buying new thermal paste and reapplying usually won't completely solve the problem. Spend $20 more and buy an aftermarket cooler like the Cooler Master Hyper 212 ($29.99 at many vendors).

What happens when you press the power button?
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April 22, 2014 2:15:46 PM

you could have possibly put to much pressure on the cpu, and broke it. They are very sensitive.

Another is if you used a thermal paste like AC5 that is conductive, you could have shorted something on the board, or the cpu.

Try taking it off again, and starting it without a cooler, just for a second.
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April 22, 2014 2:25:24 PM

anoori9000 said:
you could have possibly put to much pressure on the cpu, and broke it. They are very sensitive.

Another is if you used a thermal paste like AC5 that is conductive, you could have shorted something on the board, or the cpu.

Try taking it off again, and starting it without a cooler, just for a second.

I assure you I did not give it the hug of death, with my hands
I used Antec Formula 7 as the paste
I tried to turn it on without the cooler, but nothing was on at all, not even the fans. I think there may be a fail safe to 'sense' if the cooler is attached
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April 22, 2014 2:20:59 PM

Entomber said:
Thermal paste, if improperly applied, will not affect whether or not a computer will turn on - chances are that when you connected all of your power cables, you either improperly connected them or didn't secure them all the way. In this situation, I would disconnect and securely reconnect all of your power cables.

Also, if your computer is overheating, simply buying new thermal paste and reapplying usually won't completely solve the problem. Spend $20 more and buy an aftermarket cooler like the Cooler Master Hyper 212 ($29.99 at many vendors).

What happens when you press the power button?


Holding or pressing on the power button changes nothing
I will definitely buy an aftermarket heat sink and cooler, the stock one doesn't cut it

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April 22, 2014 2:25:50 PM

The fans don't spin at all when you press the power button?

Check your power button connecter -> mobo connection to ensure it's properly aligned.
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April 22, 2014 2:34:44 PM

Entomber said:
The fans don't spin at all when you press the power button?

Check your power button connecter -> mobo connection to ensure it's properly aligned.



It all seems to be connected
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April 22, 2014 2:43:53 PM

The question is really then if it's all connected _properly_. Double check the positive - negative connectors and match them up with your motherboard pins as they should be mapped in the motherboard documentation.
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April 22, 2014 3:03:36 PM

Entomber said:
The question is really then if it's all connected _properly_. Double check the positive - negative connectors and match them up with your motherboard pins as they should be mapped in the motherboard documentation.


I have unplugged and replugged everything to do with power, and now the fans turn on without the heat sink on.

Attempts to boot it have still not worked
I wonder if I somehow bricked the processor
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April 22, 2014 3:08:40 PM

Make sure the 4-pin/8-pin power connector next to your CPU is aligned properly and fully flush with the socket before you buy a new CPU.
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April 22, 2014 3:23:00 PM

Entomber said:
Make sure the 4-pin/8-pin power connector next to your CPU is aligned properly and fully flush with the socket before you buy a new CPU.


I think it's the CPU

I will attempt to return it, it is well within the return period of 3 years
Thanks for the help
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April 22, 2014 7:08:26 PM

Turns out the dust I have neglected to mention was short-circuiting the board, a shop vac quickly fixed that issue. Nothing was wrong with the processor at all.
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