Intel overheating issues: CPU is hot but won't boot...

Greetings,
I am experiencing an issue with my Dell Latitude featuring an Intel Celeron processor. While the machine functions initially, it shuts down after what I would consider a relatively short period of operation. My preliminary assumption was a thermal management failure, perhaps involving the heatsink or a malfunctioning processor. However, upon disassembling the unit to clean the fan and clear any obstructions, I realized the cooling system isn't the culprit. Instead, the heat seems to be emanating directly from the Intel chip itself (as seen in the attached image, "that black square"). Specifically, when the laptop is connected to the power adapter but not yet powered on, this chip becomes noticeably warm—to the point where it is quite uncomfortable to touch. Once I boot the system and attempt to perform a simple task, such as playing a video, the device shuts down within minutes. Interestingly, if I leave the chassis open to allow for maximum airflow, it stays running slightly longer. I even attempted to disable the fan to see if preventing airflow would somehow stabilize the temperature rise, but even when the processor reached approximately 90°C before cooling down, the laptop eventually forced a shutdown regardless. Do you have any advice on how to repair this, or should I simply look into replacing the entire motherboard?
Thank you!
https://postimg.org/image/ih91zdcer/

So, you went ahead and put the fan back in. Did you actually remember to apply some thermal paste this time? 😁
That chip is just an I/O controller; honestly, it can handle temperatures up to 120 C without breaking a sweat.

Bradley Lewis59 said:You put the fan back in. Did you remember to apply thermal paste? 😁
That specific chip is an I/O controller; it should be able to withstand temperatures up to 120°C.

Even with the thermal paste applied, the temperature won't exceed 45°C before the system shuts down entirely. It’s a bit of a paradox: if I keep the fan running from the very start, the temperature climbs toward 90°C and stays functional, but once the fan stabilizes and the temperature drops, the machine inevitably shuts itself off after a short period. I even tried directing an external fan directly at the chip, which allowed it to run for over an hour before I decided to end the test.
The real mystery remains why this component is overheating when the laptop isn't even performing any active tasks and is simply sitting there plugged into the power adapter.

Is Windows showing that the charger is actually connected and doing its thing?

I’d say try pulling the battery out first just to see if the same thing happens...