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Installed New CPU Cooler, Reassambled Rig and Now Computer Won't Start

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April 20, 2013 11:52:44 PM

Hello all,
First time building a computer, what a stressful experience...
Specs:
Asus P8Z77-V mobo
Intel i7 3770k processor
Corsair H212 cooler
Corsair 850W PSU
AMD Radeon 7870 oc gpu
2x4gb ram
1Tb seagate HDD

I have been piecing this rig together for about a month now, had it up and running no problem 2 days ago and installed windows 7 os on it; it was a fully functioning computer for a day or so. Started receiving cpu temperature warnings on screen (approx 60 celsius in idle...) so immediately stopped running it and purchased the H212 cooler unit and an additional fan for the cooler. Took the thing apart (mobo out, all cables disconnected, gpu out) and cleaned the paste off the cpu and installed new paste with the new cooler. Had to move the location of most cables due to the tight fit with the new cooler (using a zalman z9 plus case).
After reinstalling everything, all cables to the proper locations, all sata cables, all case power connections, to the correct locations, went to turn on the computer and nothing happened.
The mobo power led lights up, but from what I've read in other posts i guess that doesn't man a lot... No fans turn on, no additional led's on the mobo, just nothing...
Took it all apart again, including the cpu cooler and removing the paste once more (with that being said, I believe i used too much paste originally... I cleaned all of it off of everything.) Before reassembling it all in the case, I connected just themobo, case power supply and psu connections and still had no response from the system...
Any suggestions? Could i have made a mistake in installing the cpu cooler? Or does this sound like a mobo or a psu problem?
Thanks for your time experts!
April 21, 2013 12:04:07 AM

That is strange, is the the power supply switch on the back on? something could be wrong with your motherboard, like the fan header, you were using the stock fan and you got a temperature warning? what thermal paste were you using? some termal pastes are electrically conductive and a short circuit the mobo.
April 21, 2013 12:19:26 AM

Kareshnaka said:
That is strange, is the the power supply switch on the back on? something could be wrong with your motherboard, like the fan header, you were using the stock fan and you got a temperature warning? what thermal paste were you using? some termal pastes are electrically conductive and a short circuit the mobo.


Hi Kareshnaka,
Yes, the power supply switch is on. That's the only thing that gives the computer any life by way of the mobo led light...
I was looking to buy the artic cooler paste but they were sold out so i opted to just use the paste that came with the cpu cooler. And i made a mistake in the specs, the cooler us actually the cooler master H212
Related resources
April 21, 2013 3:24:31 PM

Try this: http://www.tomshardware.com/forum/261145-31-perform-ste...

if this doesn't work, remove the graphics card and use the integrated graphics. it should work then.(if this works, your psu is faulty)

btw artic silver is outdated, most thermal pastes are better nowadays. i'd recommend using the included paste over the as, it is non-conductive and easier to spread

also try using the stock cooler again maybe a short is happening with the metal parts of the heatsink.
hope this helps.
April 21, 2013 5:48:30 PM

Thanks again for the response! I'll have to go over that link in more detail, it looks like it essentially covers anything i may have done...
As it stands right now, i took the whole rig into the service department at the business i was purchasing all my parts from. We did a quick test at the counter, everything was attached as it should be (I reapplied the stock cooler this morning prior to test it out, no luck, still no power beyond the led). Tried jumping the board with no luck either and their power supply still didn't make a difference. So essentially the rig is in the tech gods hands now.
That being said, the only other thing i can think of that may have caused this that i have done was the application of the paste. When i removed the cooler master the first time there wasn't an absurd amount of paste, but probably more than was needed...it had spread far enough that had reached the bracket edges on the cpu port. I cleaned it all off prior to reapplying the cooler with less paste. I did have to remove the CPU to clean it thoroughly, but i am certain i did not bend any pins in the port.
I guess my next question is, is it possible for there to be no power to the system if there is something damaged with the port or CPU? Or would the system still power up even for a couple of seconds? At least to the post stage? I know there are sequences of beeps i should listen for that would tell me what's wrong, but i want even able yo get to that stage
April 28, 2013 1:33:49 PM

Rig is up and running.
Tech looked at it and there was a single bent pin in the socket... A new motherboard later, and we are all up and running!

Thanks for your help earlier!
!