What could be the problem with Dell Inspiron 7520 heating?

Question

laptops

The issue was resolved, it turned out that the video chip was overheated, after the replacement everything fell into place.

Answer 1

Well, there are several options:
1. Poor-quality thermal paste
2. They smeared it with a very thick layer (a lot is not always good)
3. The radiator was not screwed tightly

Answer 2

well, you badly applied thermal paste and this is obvious

Answer 3

Is the video chip crystal directly adjacent to the cooling system or through a thermal pad? If through the gasket, is the gasket intact? Did you apply thermal paste to the gasket? Did you throw away the thermal pad?