Laptop over heating - fan is clear and working well, new thermal paste and no viruses!?

RDKells

Honorable
Sep 16, 2013
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Hello,

A friend of mine gave her laptop as it kept restarting, my first thought was that it was overheating so I downloaded speedfan and then ran some cpu intensive apps like playing videos and using chrome - the temps hit around 85 degrees pretty quickly and it turned off, so I turned it back on and left it and it just sat there for a while, without issue so I ran the same intensive apps and the temps shot up to 85 and it turned off again.

I therefore think it's safe assume that it's over heating, albeit when I've had laptops overheat in the past the bottom is incredibly hot and, close to the fan vent, the air is quite hot this one was cool on the bottom and the air wasn't warm...

I dismantled it, cleaned the heat sink and fan of any dust (although there was barely any) and then took the heatsink off and used ArctiClean's 2 step method to clean the paste off and prepare the surfaces of the CPU/Heatsink for new paste.
I applied a thin, even layer of cooler master high performance (currently using this in the gaming PC I built and use daily) and re-attached everything, double checking the heatsink was attached firmly and correctly.

I booted it up and ran some intensive tasks again, it did take noticeablly longer to overheat - the temps were actually in the green for a while, but it did ultimately overheat. I can't think why though, te fan on it is suprisingly powerful and working, the laptop is on my desk and my room is probably just above room temperature so I'm stumped - the only thing I could think of was maybe a virus altering the temperature readings, so I took the HDD out and scanned it with ESET Smart Security Premium and there were a few potentially unwated apps however no actual viruses.

I'm stumped.

Laptop is a Toshiba L630-166 running windows 10.
 
If it is still overheating after cleaning it out and replacing the thermal paste, then it is probably hardware that is going that is the cause. So one or more parts are going to need replacing. Depending on the situation. Worst case, multiple ones will need to be.
 
If it is still overheating after cleaning it out and replacing the thermal paste, then it is probably hardware that is going that is the cause. So one or more parts are going to need replacing. Depending on the situation. Worst case, multiple ones will need to be.
 
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