Help!! cpu dead??

taylormc95 · Aug 21, 2014

Hey i could really use some help guys.. So today i ordered a new gpu and psu because mine were becoming old and outdated. So i check in my pc and wanted to see if i would have room for the card. Well while in the case i decided to blow some dust out using my breath. (Yes i know this was stupid) so i took the heatsink off and blew the dust off it and the little specs of dust off the cpu and put everything back together. NOW MY COMPUTER WONT START

Im not sure what happened but im freaking out. My psu is good ive tested it. Please someone help..

dottorrent · Aug 21, 2014

Okay. Try a few procedures -

1) Are your connectors secured?

2) Is your PSU turned on from the switch and from the wall?

3) Are your fans spinning?

taylormc95 · Aug 21, 2014

yes they are
Yes it is
And they only spin for a second or 2 after i press the power button, sometimes longer sometimes less but always turn back off again.

Remind you the pc was perfectly fine for 4 years up until today. Only things i did was move the hard drive down 2 slots to make room for the 7870 and take off the heatsink. Im not sure what i couldve done wrong to mess my computer up..

Matthew-san · Aug 21, 2014

Perhaps the CPU was loosened from the CPU socket when you uninstalled your CPU cooler. You could try removing the CPU, putting it back in, and then start your computer.

V1ctor89 · Aug 21, 2014

Never put back the heatsink without cleaning the old thermal paste and putting on a fresh layer. And be sure the cooler is well stuck onto the CPU, and the fan's power cable is plugged in.

taylormc95 · Aug 21, 2014

Took out cpu and put it back in.. Still does the same thing, boots for a couple seconds but screen stays black.

taylormc95 · Aug 21, 2014

Will not having a new layer of paste cause it to not boot though? The cooler is back on tight and it still wont boot. Sometimes the pc will run for 1 second sometimes 5. But always turns back off

Matthew-san · Aug 21, 2014

It probably has nothing to do with the way you've installed the paste if everything is secured. It maybe a PSU or motherboard failure instead. Can you tell us your system specs?

taylormc95 · Aug 21, 2014

Gigabyte p55m-ud2 mobo, nvidia 9500gt intel i5 2.6ghz and a 400watt coolermaster psu. The cpu cooler is stock intel one

taylormc95 · Aug 21, 2014

I did the psu test with a paper clip and it worked fine. Sometimes the gigabyte mobo screen at the start of the boot will show but it never goes past that before cutting off

taylormc95 · Aug 21, 2014

The paste is about 4 years old and that was the first time the cooler has been off since being built.

Guest · Aug 21, 2014

Always put new paste on after taking the heatsink off. There are microscopic pits in the IHS (integrated heat spreader) and Heatsink surface, the thermal compound fills in those pits. Otherwise, the air in between will heat up very fast.

taylormc95 · Aug 21, 2014

You think that would cause the booting issue? ill get a new cpu cooler and paste anyways but im starting to think its something besides the paste issue.

Guest · Aug 22, 2014

Probably not since you have the heatsink on, it's just general practice to put on new TIM (Thermal interface material).

Matthew-san · Aug 22, 2014

I had similar booting issue a couple months ago. I'd get to the Gigabyte logo for the BIOS and then it'd shut off. I just reset the CMOS and everything worked fine after that.

Guest · Aug 22, 2014

Here, I would try this. Clear CMOS, take out all PC Components except for the CPU. Make sure all power connections are secure for the CPU and ATX board. Then check if you still have the power cycling issue. Obviously the computer will beep due to finding no ram, but this way you will know if there is a problem with those components that were taken out.

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