Can't get my CPU to cool down!

beany_bot

beany_bot

beany_bot

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OK guys. Real head scratcher here (for me at least).

I got a new PC at work recently.

It has a 7700K in it. completely stock.

Checking HW Monitor I noticed that it sat between 60 and 80 degrees at idle and basic things like email and simple web. Bit hot I thought, so I downloaded Furmark and did a CPU stress test. within 10 seconds it shot way up to over 90 degrees, it rapidly got to 96 degrees and I stopped the test. OK... something not right.

As I didn't build the PC I assumed something was wrong with the Thermal paste application or something as the fan seemed to be working correctly and was plugged in correctly to the CPU fan header.

I was going to just buy some thermal paste but I thought, hell I'll get a new cooler "just in case". So I bought a basic Arctic 64GT Rev.2

Not a fancy cooler or for overclocking but it should be better than stock, certainly if nothing else as good as stock.

I just fitted it and re-ran Furmark.

Exact same figures! maybe a degree or two lower but certainly still "overheating".

60-80 at idle and over 90 after only 10 seconds of stress testing.

Here was the latest data with the new cooler fitted. only 2 degrees cooler than the old one. And I know I fitted it right. What is causing it to run so hot!?

sssss.png
 
Try running with the side off the case. I very much doubt it cause it should be idling at no more than 50 really so I don't think poor airflow would raise it by 30/40 degrees but it might just be that suffocated.
 
Snookums said:
Try running with the side off the case. I very much doubt it cause it should be idling at no more than 50 really so I don't think poor airflow would raise it by 30/40 degrees but it might just be that suffocated.
Click to expand...

Thats just it, the airflow is superb in this case, its a massive case, very spacious with 4 big 120mm fans, all working nicely all cables tidied away nicely. It's defo defo not a case issue. It's a much better case than I have at home for airflow for sure and I have no issues at home.
 
Those temps are way higher than they should be.

Firstly reset the CMOS if you haven't already.

What motherboard do you have?
 
Where did you get the PC from? Was it built by someone you know or is it an off the shelf build?

Reason I ask is that hopefully you haven't voided any warranty by changing the CPU cooler yourself!
 
ExRayTed said:
Those temps are way higher than they should be.

Firstly reset the CMOS if you haven't already.

What motherboard do you have?
Click to expand...

I know! just don't know why.

The main is an Asus a68hm-plus

Resetting the CMOS, not familiar to me. I will google how to, will i loose any data/settings/drivers?

What about the voltages here? I know nothing about AMD CPUS but isn't 1.456v high? Pretty sure thats high for an intel?

Could it be that HWMonitor is just wrong here?
 
Last edited:
Biz.Kid09 said:
Where did you get the PC from? Was it built by someone you know or is it an off the shelf build?

Reason I ask is that hopefully you haven't voided any warranty by changing the CPU cooler yourself!
Click to expand...

Off the shelf (for work)
Worst case I can refit the old cooler....
 
Unplug the PC from the mains and pull the battery from the motherboard. Cycle the power button a couple of times to get rid of any residual voltage in the caps.

Leave it for 5 minutes then reassemble and turn on.

Load BIOS defaults and check temps again

You won't lose any data, don't worry :)
 
Does the heatsink feel warm to touch?
If it's pumping out a true 60-80 degrees the heatsink should be fairly warm.

If it isn't then either it isn't contacting properly (no dig at you) or it's not telling the truth.
 
ThaReaperGuy said:
Does the heatsink feel warm to touch?
If it's pumping out a true 60-80 degrees the heatsink should be fairly warm.

If it isn't then either it isn't contacting properly (no dig at you) or it's not telling the truth.
Click to expand...

Just had a feel of the heatsink. Doesn't feel particularly warm to me. I'm not expert but I wouldn't say it feels much warmer than anything else in the case. Im certain I have fitted it correctly. Impossible to go wrong really with this AMD cooler as it has two snap clips that click down tight. I'm really confident its on right.

Is there different software to test temps?
 
ExRayTed said:
Unplug the PC from the mains and pull the battery from the motherboard. Cycle the power button a couple of times to get rid of any residual voltage in the caps.

Leave it for 5 minutes then reassemble and turn on.

Load BIOS defaults and check temps again

You won't lose any data, don't worry :)
Click to expand...

Will do thanks
 
If the heatsink isn't hot to the touch, then that's a problem. Your motherboard is either not reporting the correct temps or it isn't installed properly.
 
ExRayTed said:
If the heatsink isn't hot to the touch, then that's a problem. Your motherboard is either not reporting the correct temps or it isn't installed properly.
Click to expand...

I just ran furmark. CPU was "apparently" 92 degrees, air coming from CPU heatsink was "mildly warm" at best. Heatsink not hot to touch about as warm as an armpit or something.

The stock heatsink was fitted correctly as I can see from the remaining thermal paste and I am certain that this new one is fitted correectly.

Shall I reset BIOS to see if that fixes reporting wrong temps? assuming it is that?
 
The plot thickens a bit...

I just downloaded "cpu thermometer" and "speedfan" both of which are meant to show you CPU temps. Neither of which are doing so...no data for CPU temps? (sppedfan correctly showing GPU temps) Sounding ever more a motherboard issue. Don't know where HWmonitor is getting it's data from then?
 
certain monitoring apps will not work with certain CPUs from memory so that might be an issue too ...

I cant remember which ones off the top of my head.

Does your motherboard bios not indicate CPU temps to rule out OS/software?
 
If it's a work computer from a decent supplier just sort it out under warranty, I wouldn't waste time faffing about with it.
 
OK I' am back. I reset the BIOS with battery out etc.
While I was in there, I noticed from the PSU, the 2x 4 pin connectors, the one that says CPU wasnt plugged into the motherboard, the other one was. Also the shape was slight wrong on the pins so I chaged it to the one that says CPU.

Alas it's still doing the same thing, saying Im idling at 60 and shooting up over 90 under short stress test.
 
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