Friday, 13 May 2011

The OverHeating Laptop

We had an HP laptop come into work and it was overheating bad and swtiching off.  So after some testing i found that it was reaching 90 degrees Celcius and then switching off to cool down.

I removed the Keyboard and button plate and then checked the system again to see if the fan was working.

1. The Fan was working fine.

When the fan turns on it cools the Copper heatsink which in turn cools to processor, when touching the heat sink close to the fan it was cool and touching the heat sink close to the processor was Fucking HOT!. 

I removed the Fan and the heat sink then removed the processor i cleaned the transfer paste off both the processor and the heatsink then applied more and refit the Processor, heatsink and fan.  Started the laptop up and performed a CPU burnin using CPU BUNRIN and waited for it to overheat or to stay at a reasonable temperature.

I was able to view the CPU temperature using a program called CPUID this showed me that my efforts were fruitless and the CPU was still overheating.

Luckly this laptop was under warranty.  So i ordered and Mainboard, a processor and a new heatsink.

When these parts arrived i decided to try the easy parts first so i removed the old heatsink and processor and installed the new ones.  BINGO!!! this fixed my issue.

It seems that the CPU may have been overheating and unable to cool properly but replacing the heatsink i think was also a sure thing as i wasnt sure whether the old heatsink may have been warped or bent in some way prventing proper cooling of the CPU.

A least if the laptop hadn't have been under warranty it wouldnt have cost me the world for a new mainboard.

So if your laptop or even your PC is overheating:

1. Remove clean and replace your heatsink using new heat transfer paste
2. Replace the heatsink
3. Replace the CPU
4. Pray it aint anything else or its gonna start costing some.

Use SPUID to check your runnign temps my i7 is running at 65 degrees Celcius ATM.

-Fr33ze

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