So I bottled up my PC for the first time in awhile and got a no signal. Figured out the gfx card had an issue then I find out that the LAN port is also damaged. Take things apart and find this. https://ibb.co/0D8y7jw
That's why I said to clean the contacts to remove the corrosion. Isopropyl alcohol or contact cleaner can help with this. Then if there is a completely destroyed contact you can replace it through a few ways.
Okay! DId what you said it worked gfx card works and still works in said slot. Booted a few times now I get he blue screen for critical failure and I can't system restore or start in safe mode. Also tried to reset and refresh system both can't be done