Installed a new CPU Cooler and now my PC reboot repeatdly every 3-5 Seconds?

tay12345 · Jul 8, 2015

Okay i order the Cooler Master Hyper 212 EVO and just received it today installed it because my tem was so high my pc shutdown to save itself but everything was working perfectly fine now that i installed it my pc turn on my fans runs and i hear the beep as always when my pc boots up but the very first 5 seconds not even able to login in my pc reboots every single time please help and im a windows 8.1 user if that matters??

Forgotten031511 · Jul 8, 2015

Dumb question, but did you put thermal paste on the CPU/Heatsink?

Also, did you bump anything else or loosen a cable by mistake?

Sounds like you disrupted the seating of the CPU in the socket to me.

System Specs?

tay12345 · Jul 8, 2015

Forgotten031511 :

yes i did

Rogue Leader · Jul 8, 2015

How did you put on the thermal paste? Give us all the steps that you did exactly, and how much. Also double check all connections make sure all the fans are plugged in.

tay12345 · Jul 8, 2015

Okay i uninstalled my old heatsink and cooler and installed the Cooler Master Hyper 212 EVO i didn't unplug anything but the cpu fan when i was uninstalling my old heatsink and cooler.Was i installed the Cooler Master Hyper 212 EVO, put thermal paste on the cpu, and plug the new cpu fan on my monitor it was booting for like 5 seconds then it reboot repeatedly every 5 seconds . I didn't unplug anything else.

Forgotten031511 · Jul 8, 2015

You must have un-seated the CPU somehow...or fried it.

Did you ground yourself properly or just do this on carpet?

Rogue Leader · Jul 8, 2015

tay12345 :

Ok so did you clean the thermal paste off the CPU? If so what did you use to clean it off (a rag slightly dampened with rubbing alcohol is preferable). In putting the new one on you should have used about half a pea sized lump of thermal paste and then immediately seat the cooler without removing it at any point.

If you used another cleaner that could get into the pins and short the processor, as well too much thermal paste can push out and get into places it doesn't belong and cause issues too.

JetonF · Jul 8, 2015

Does it shows anythink in monitor or just black ?

tay12345 · Jul 8, 2015

i used a rag with very little alcohol until it was completely clean. Then i put a dip of thermal paste on the cpu and gently rub it on the cpu

tay12345 · Jul 8, 2015

JetonF :

Yes it did but for like 5 seconds then reboot again and again

tay12345 · Jul 8, 2015

Forgotten031511 :

I have a l shaped desk so i used the left side to work on my pc not on carpet and with no static band or whatever those things are called many apologies

tay12345 · Jul 8, 2015

Rogue Leader :

tay12345 :

Ok so did you clean the thermal paste off the CPU? If so what did you use to clean it off (a rag slightly dampened with rubbing alcohol is preferable). In putting the new one on you should have used about half a pea sized lump of thermal paste and then immediately seat the cooler without removing it at any point.

If you used another cleaner that could get into the pins and short the processor, as well too much thermal paste can push out and get into places it doesn't belong and cause issues too.

i used a rag with very little alcohol until it was completely clean. Then i put a dip of thermal paste on the cpu and gently rub it on the cpu

Forgotten031511 · Jul 8, 2015

tay12345 :

Even thought the computer was on a desk, where you on carpet? Without a static band or grounding yourself, you may have fried the CPU.

It really sounds like the CPU is dead...

Rogue Leader · Jul 8, 2015

tay12345 :

Thats probably your problem right there. You need to just put a half pea of thermal compound and then put the cooler right on, it will spread it out for you. Very likely you have spots that are not being cooled and its overheating immediately.

This is the first thing I'd do then see what happens. If its still happening after that you may have unseated or damaged your processor somehow

JetonF · Jul 8, 2015

If your cpu and cooler is installed correctly, then you have a problem with CPU.

tay12345 · Jul 8, 2015

Rogue Leader :

tay12345 :

Thats probably your problem right there. You need to just put a half pea of thermal compound and then put the cooler right on, it will spread it out for you. Very likely you have spots that are not being cooled and its overheating immediately.

This is the first thing I'd do then see what happens. If its still happening after that you may have unseated or damaged your processor somehow

Are you sure because i seen people spread there's on the cpu then put the heatsink and cooler on

Forgotten031511 · Jul 8, 2015

Promise, half a pea size drop on the CPU and then seat the heatsink...it spreads it evenly and is the correct way of doing it. Either the CPU has poor thermal coverage in some areas or the CPU is dead.

Again, you were are carpet and no static protection. Touching the CPU directly can shock and kill it.

I REALLY HATE to say thing, but I think the CPU is fried...just from what is happening

tay12345 · Jul 8, 2015

Forgotten031511 :

But i Had Shoe on does that still mean i could have fried my cpu

Rogue Leader · Jul 8, 2015

tay12345 :

Theres more to it than that, this was common with older single core CPU's where you would "season" the bottom of the heatsink by rubbing in a little thermal compound, and then spread and cover the core of the CPU with a razor blade to completely cover it.

I've seen guys do the rub in method, and IMO it isn't fool proof and doesn't leave enough to fully contact the heat pipes in all places causing hot spots. The half pea in the middle is simple, easy and always works.

Now that said even without carpet, and a safe environment, there is a chance you cooked the CPU installing it by static electricity. But I would still try properly installing it first.

tay12345 :

Yes, you can still easily build up static electricity that way. Try it, rub your shoes on the carpet and then touch some metal, it sometimes will do it.

Forgotten031511 · Jul 8, 2015

Most certainly, you didn't ground yourself so you have static shock. To kill a CPU you need such little shock, you wouldn't even feel it yourself.

ALWAYS ground yourself when working inside a PC...

garrick · Jul 8, 2015

Take off the CPU cooler and see if there is enough CPU thermal grease and check to see that you haven't accidentally loosened the CPU from the socket.
As always touch something metallic like the PC case before handling any of the PC parts to discharge electricity.

Can you clarify if its rebooting right after it powers on or 5 seconds after the windows loading screen appears?

GhislainG · Jul 8, 2015

I doubt your CPU is damaged. Could you remove the new cooler and install the old one? The cooler might be shorting the motherboard or you tightened it too much and the motherboard was damaged.

tay12345 · Jul 8, 2015

Wait what happens if its too tight i made sure i tightened it so i wouldn't be lose but not so tight that it could damage the mobo an any kind of way.

tay12345 · Jul 8, 2015

Rogue Leader :

tay12345 :

Theres more to it than that, this was common with older single core CPU's where you would "season" the bottom of the heatsink by rubbing in a little thermal compound, and then spread and cover the core of the CPU with a razor blade to completely cover it.

I've seen guys do the rub in method, and IMO it isn't fool proof and doesn't leave enough to fully contact the heat pipes in all places causing hot spots. The half pea in the middle is simple, easy and always works.

Now that said even without carpet, and a safe environment, there is a chance you cooked the CPU installing it by static electricity. But I would still try properly installing it first.

tay12345 :

Yes, you can still easily build up static electricity that way. Try it, rub your shoes on the carpet and then touch some metal, it sometimes will do it.

is there anything else i might have done wrong cause im coulda freaking out here

Rogue Leader · Jul 8, 2015

tay12345 :

Before you freak out try what I said, This is a good install guide:

http://www.overclock.net/t/1322128/guide-installing-cooler-master-hyper-212-evo-plus-x-on-sockets-775-1150-1155-1156-1366-2011-am2-am3-fm1-fm2

Its highly unlikely you put it on too tight, the springs take care of that. However when installing the back plate you could have damaged your motherboard if you say scratched the screwdriver against it, or tightened the standoffs with the power of hercules.

Check ALL your connections, check the processor is still seated properly and the locking arm is in place and tight, make sure nothing is shorting, then go. If it still won't boot then there is a good chance your processor got fried.

Installed a new CPU Cooler and now my PC reboot repeatdly every 3-5 Seconds?

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It's a trap!

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It's a trap!

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It's a trap!

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