Intel i5-2520M experiencing overheating issue on Fujitsu Lifebook E751
Intel i5-2520M experiencing overheating issue on Fujitsu Lifebook E751
I own a new Fujitsu Lifebook E751 that was discarded by a company. I chose to use it as my laptop because it performed slightly better than the one I previously had.
The device has been thoroughly cleaned inside and out, including applying fresh thermal paste on the CPU and lubricating the cooler. It appears in excellent condition.
However, the CPU tends to overheat quickly—especially when opening Firefox or watching a YouTube video—and the cooler activates, producing an irritating sound.
This particular CPU uses turboboost, and it often enters that mode for a few seconds, causing the temperature to rise significantly. Because of this, the cooler must work harder, which leads to higher noise levels.
Currently, I keep turboboost disabled and the cooler operates more quietly, likely because the temperature doesn’t spike as much when it’s active.
I suspect there might be an issue with the cooler or heatsink. Although I haven’t checked it closely, it looked normal during disassembly.
I’m confident the CPU is functioning properly. Most of them briefly enter turboboost but then let the cooler handle the cooling, maintaining a stable temperature.
There were no available options in the bios for the cooler or CPU as I've observed. As mentioned, I also oiled the cooler and cleaned it. It didn't show any signs of damage. From my experience with older laptops, they didn't have issues either. I understand that 70 isn't too high, and while I'm not concerned about temperature, I need to address the overheating problem. That's why I suspect the heatpipe might be the culprit.
Refresh the thermal paste on the CPU. After that, it seems the fan configuration might be the issue. Some fans work better than others. My Dell makes a lot of noise; my HP runs quietly.
They appear separately. I can manage the fan alone, costing 10$, but a new heatpipe might be challenging. We're discussing technology from 2011-2012.
I'm suggesting this isn't typical. Are there any issues with a heatpipe that I should notice during inspection? Perhaps it's defective and I can identify it that way...
From a logical standpoint, even with high temperatures and increased fan speed, the noise level wouldn't match what the laptop makes when it's brand new. It seems my fan might be worn out and could benefit from a replacement. These fans typically have bearings that degrade over time. Also, I'm uncertain if I applied enough lubrication to the rod connecting it to the cooler system.