What is the problem if laptop performance drops after changing the power socket?

Question

HP

At one fine moment, my laptop stopped charging, I had to fiddle around with the charger in the connector to find the correct position and charge it, it couldn’t last that long, so I decided to contact the repair services. I will not describe how other adventures tried to deceive me, the bottom line is that after replacing the power connector on the laptop, charging works, while performance drops by about 50% when powered from the mains. Even with the high performance mode, fps steadily jumps from 50 to 100, friezes appeared, performance dropped. At the same time, they checked the charging, it was working, the sockets too, the day before that it was possible to find a position and use the laptop at full performance. Those. with a broken connector, charging still worked, but after replacement it didn’t. Now the question is How can I get back the previous high performance? Notebook HP Pavilion. Model, specifications, if asked

Answer 1

Oh, I don’t like such malfunctions ...
As you know, laptop motherboards (and not only them) are made on multilayer printed circuit boards. What is described in the question is very similar to the breakage of one of the inner layers in the area of ​​​​the supply plug. Since there are a lot of layers there, and there are even more different electrical circuits in this zone, such a break could manifest itself in any way, depending on what broke off. As long as the old connector was not removed, it was possible to close the cliff by moving it and use the device with sin in half. After removing the connector, this feature was lost.
Of course, it cannot be repaired. Rather, there is only one way, but it is ... expensive - a complete replacement of the motherboard.

Answer 2

I will assume that when the laptop was shaking back and forth, the thermal gum between the radiator and the processor (or vidyukha) peeled off. Check temperature under load.