Thinkpad: Well it seems dust isn’t the issue with my CPU running hot.
If fan not broken try re-paste, better with good reputation thermal paste.
And make sure you dont blok air vents
Also put on tpfancontrol. You can set what temps come on at what level. If the fan is running full blast and it’s clean and vents are not blocked, probably the paste.
I see, it's pretty clear that it is a kernel failure right there. We have the same CPU, just to confirm do you experience and struggle with lag in the system? I can see that your CPU speed is so low.
Remove old thermal paste and reapply new one
You do not need to put any on the smaller cpu die, that's the PCH and it should not be connected with the heatsink. Lenovo did not put any tim there originally, but this won't hurt anything
Also if your thermal issues are very bad replace the heatsink with dGPU heatsing. It has 2 heat pipes
is this a brand new laptop or a used/
either way. if you are not using usb-c alt mode dock, not putting thermal paste on the smaller chip is better.
The thing is, the PCH normally stays at around 50°C when the CPU can reach temps of ~95°C on this machine. If you have thermal paste on the PCH, you basically connect the hot heatsink with cold chip, thus increasing it's temperatures
Not sure whether or not that large metal part (not sure what it is - an SSD mount or heatsink?) could also be conducting heat. Might pay to stick some thermal pads down.
I'd move that sticker though between the RAM slots. That's a bad location for it
go to Windows energy power management and set the CPU performance at 90 percent or less and try again