Question Black thing on the CPU pins ?

[opiancon]

So, here's the issue. My pc won't turn on, I tried to troubleshoot it with cleaning and re-seating the ram, reset bios, and cleaned. it doesnt work again. So i tried the ram on a friend's PC and it's working.
So then I though it was a motherboard fault so i bought a new one. I saw on the pins on the CPU there's a black thing and i don't know what caused that. So i installed it on my new motherboard and it doesn't open.
Is my cpu the issue?

My CPU is a Ryzen 5 5600G, I do not have dedicated GPU.

 

[COLGeek]

Upload a picture to a site like imgur.com and then post a link here. We need to see what you are referring to.

 

[opiancon]

Upload a picture to a site like imgur.com and then post a link here. We need to see what you are referring to.

Here you go, theres a black thing on the pins. I already bought new mobo and it doesn't work.

https://imgur.com/a/Q3oGjEg

View: https://imgur.com/a/Q3oGjEg

 

[COLGeek]

The pictures are not very clear. There does seem to be some discoloration on some pins.

Have you tried installing this CPU? If so, in what motherboard (make/model)?

 

[SkyNetRising]

here you go, theres a black thing on the pins i already bought new mobo and its doenst work.

Clean pins of your cpu (gently).
Use isopropyl alcohol and a soft brush (toothbrush would work too).

It looks like some black residue. Probably dust mixed with some liquid and then dried out.
Could be also corrosion.

 

[opiancon]

Clean pins of your cpu (gently).
Use isopropyl alcohol and a soft brush (toothbrush would work too).

It looks like some black residue. Probably dust mixed with some liquid and then dried out.
Could be also corrosion.

should i put an alcohol directly, is that ok or should i put it in soft brush? thabks!!

 

[opiancon]

The pictures are not very clear. There does seem to be some discoloration on some pins.

Have you tried installing this CPU? If so, in what motherboard (make/model)?

yes i tried it. my old motherboard is gigabyte b450 and i bought new mobo gigabyte b550m k