Dell L502X CPU overheating

carr251

Honorable
Sep 8, 2013
4
0
10,510
I have a 2011 L502x with the i5 2520m, and it is overheating. Once any game is opened, within 2 minutes, temperatures spike to 97 Celsius and the CPU down-clocks to 800 MHz. I cleaned out the computer and there is no dust, replaced the thermal paste with AS5, and checked that the fan is working. It didn't use to do this, and the problem has only been happening the last 2-3 months. What I can't figure out is why the fan is blowing out cold air, while the heat sink near the CPU is burning hot. Anyone have an idea as to what the problem is?

*Edit: CPU idle is at 50C
 

carr251

Honorable
Sep 8, 2013
4
0
10,510
Speedstep is enabled, but, I have not tried running it off the iGPU (I'll try that now). Under no load (Power mode Balanced), it down clocks to 1.6 GHz.

EDIT:Minimum processor state: 5%

EDIT: Just tried iGPU, and the processor is still throttling to 800MHz because it is overheating.
 

carr251

Honorable
Sep 8, 2013
4
0
10,510
The room is about 80F and the laptop is sitting on a wooden desk, no obstructions. It is running off of outlet power, as the battery was fried from the heat. It has no rear port, and none of the ports are obstructed. What I cant understand is that it worked fine playing Crysis 2 a couple months ago, and now is overheating while blowing cold air out. In January (When it was about 55F) it ran at about 75C in Crysis 2. After about an hour, the Heatsink/Fan finally was blowing out warm air, but, the laptop is still at 800 MHz.

EDIT: GT525 is at 60C

Screenshot: i.imgur.com/K5QixW2.png
 

kerio_orisa

Commendable
Jun 13, 2016
22
0
1,510
Hi,
My laptop was heating up a bit too much (temperature above 90’s in normal load, and sometimes shutting down after hitting 100C), so I finally decided to open up my Dell XPS 15 (L502X) and replace the thermal paste. I have few questions:
When I opened it up, apart from the thermal paste on the cpu (i7-2630QM) and gpu (Nvidia GT-540 2gb), there were several white pads, and one grey pad. The grey pad was above the motherboard HM67 chip. This is the first time I ever saw a heat sink with thermal pad needed to cool down the motherboard. Or am I missing something? And what are all these small white pads? They seem to be covering different chips on the motherboard. Does anyone know the width of these white pads, and grey pads? Are all of these thermal pads to conduct heat? Or some are meant to block heat? I think the white ones are meant to block health, but I may be wrong.
Anyhow, after replacing the thermal paste (didn’t do anything with the pads, since I wasn’t expecting to see them anyway), the temperature of CPU and motherboard remains in 70’s C, and GPU in 60’s C under normal load (20 browser tabs, and some MS Office work alongside). But the fan works in an annoying manner with bursts of sounds, instead of constant sound. It is rather annoying, and I rather have the fan working the whole time than these annoying bursts (fan on, fan off, fan on, fan off, and goes on like this constantly). Any solution to fix this?
I am also considering downgrading to I5-2540M (lower TDP, and dual core), but its not worth it if the fan is going to behave in similar manner.
 

Rasmus007

Reputable
Apr 5, 2016
53
0
4,630
i had the same issue with my Fx-8310, best solution for me was to buy some artic silver 5 thermal compound (fantastic thermal compound btw) apply only a pea sized dot of it in the middle of the cpu best you can, and get a cpu cooler brand new one like the D92 Coolermaster pro if your case supports it 212 Evo Coolermaster pro!
 

kerio_orisa

Commendable
Jun 13, 2016
22
0
1,510


Hi,
Thank you for the reply. I have used good quality thermal paste (COOLERMASTER MasterGel Maker Nano). I don't think the issue is thermal paste anyore since I have replaced it. The temperatures are still quite high, and the fan noise is unbearable. I would appreciate some other solutions.
 

Rasmus007

Reputable
Apr 5, 2016
53
0
4,630



The last thing i could think it could be dealing with thermal paste is the way your applying it, ik you dont want to hear anymroe about this but i recommend a small pea sized dot. If you are using lines going across your cpu it might actually be to much thermal compound, but on another note. Otherthan the heatsink and thermal compund i cant really think of anything im sorry! if i do comeup with a solution i will be sure to respond asap!