Reduce the processing speed of your CPU.
Reduce the processing speed of your CPU.
I suggest wiping the laptop, though you might prefer not to replace everything. Once done, use Intel XTU to tweak CPU speeds or simply adjust the Windows power plan you select, lowering Maximum Processor State to 99%. This should noticeably slow down your CPU performance.
You might be lucky if you reattach the CPU and clean it well if it’s dusty. I’m familiar with your laptop’s heat issue—temperatures spike during charging, the fans crank up, and I attempted to take off the back cover but ended up hitting a stubborn screw. It took me a while, and in the process I broke two T5 screwdriver bits. I also couldn’t manage to remove it easily.