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Оригинальный сообщение: jayeff ,

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Hi,

It might be blowing hot air but not efficiently enough to remove most of the heat generated by the CPU.

You need to disassemble the laptop and remove the thermal cooling assembly (fan) and ensure that it is clean and dust free. Check that the fan vent in the case is also clear of dust etc.

While you’re there you may as well gently clean off the old caked on thermal paste on the CPU and apply a small drop of new thermal paste to ensure good heat transfer between the CPU and the fan assembly.

Here’s a link to the [https://downloads.dell.com/manuals/all-products/esuprt_laptop/esuprt_inspiron_laptop/inspiron-15-3520_service%20manual_en-us.pdf|service manual] for your laptop.

Scroll to p.45 to view the necessary pre-requisite steps and then the procedure to remove/ replace the thermal cooling assembly.

Here’s a [https://downloads.dell.com/manuals/all-products/esuprt_laptop/esuprt_inspiron_laptop/inspiron-15-3520_service%20manual_en-us.pdf|link] where it answers how to apply thermal paste to the CPU in your laptop. There are plenty of video on You Tube as well that show how to apply thermal paste to a CPU

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