Laptop CPU idles at 65c even after reseat

Silenced · 6 Apr 2013 at 13:01

Hey guys, trying to fix a family friends laptop, originally it wouldn't start but after heatgunning the GPU the CPU is now in the 60c+ area when idling. Obviously this is not right and needs sorting.

Any ideas what I can do? I've reseated 3 times, put a copper shim for more contact but it doesn't seem to have helped.

RJC · 6 Apr 2013 at 13:03

Does the cpu fan start up?

Laptop cpu's have a higher thermal fresh-hold compared with desktop versions (in the majority of cases)

Rooster212 · 6 Apr 2013 at 13:03

My MacBook often idles at 50-60 degrees after it has been used for a while, there isn't much you can do. It is load temps you need to worry about, mine goes up to around 100 degrees, should be fine for a laptop.

Silenced · 6 Apr 2013 at 13:15

Yeah I hear the fan spinning away it just seems really high given its idling. Turning on underclocking whilst idling helped minimally.

I get that laptops will get hotter over time but this is after it's been on for around 5-10 minutes. To me it seems that it should be much cooler?

If not it explains why the GPU needed to be reflowed

trickynickyuk · 6 Apr 2013 at 13:41

try cleaning the heatsink and fan it might be full of dust

biuro74 · 6 Apr 2013 at 14:44

What you mean "heatgunning" GPU ? I know what heat gun is, but I'm afraid to think further, what you've done :==]

Did you apply any thermal paste to CPU (and GPU, if you had an access) ? If you put shim like this:
http://www.extremeoverclocking.com/reviews/misc/Copper_Shims_1.html
with no thermal grease apply, so it would be just useless.

trickynickyuk · 6 Apr 2013 at 19:44

!!!!!!!! im confused HEATGUN what you dont want to heat gun anything you could make it worse you want to reapply thermal paste to CPU and GPU and clean the heatsink

Silenced · 7 Apr 2013 at 21:09

The heatsink is perfectly clean.

I made a copper shim to give more pressure onto the CPU, it has thermal paste on everywhere that it needs to be.

Regarding the 'heatgunning' I did, I used a heatgun to reflow the GPU & the CPU Socket (Not the CPU itself). This is due to the fact the CPU socket is suffering an intermittent fault, causing the laptop not to start. Along with this the GPU also needed reflowing as the display did not work originally.

Don't panic that I've been running around willynilly with a heat gun melting the motherboard

Fixed several laptop GPU's using it ;P