Question Motherboard problem on HP 840 G3 i7

[Racko99]

I have a problem with hp 840 g3 motherboard, here is a video link where everything is explained,

View: https://youtu.be/xxaAamjW5Js

I have multimetar and i have 19.5v main

 

[lga1156_ftw]

what motherboard model number , its written on there somewhere like this "6050A2728501-MB-A01 "

was there liquid damage prior to getting the mobo? Look very close , it might be "cleaned" but you can see if there was

 

[Racko99]

Yes, it is that model. No, i cant see any luqid damage on mobo, everyrhing looks okay