repair laptop motherboard

Hello, I bought used laptop Acer E5-576G from repair shop and when I opened it up I found a red soldered wire inside on the motherboard. It clearly looks, that the repairmen did that. I checked the internet if the original motherboard has this wire or not and I didn't saw any. Why would they do...

Hi Everyone :) I have a HP probook 450 G5. The motherboard that is inside this pro book is a DA0X8cmb6E0. During cleaning of this laptop, I let a screwdriver fall onto the board and it punched off 2 or 3 very little parts of it. I thought nothing happened and so I re-assembled it. Now the...