[SOLVED] White squares on screen, then no signal at all ?

[Limoero]

I was using my computer then suddenly, it starts to show white squares and goes to black screen.
I was just using it normal, no heavy applications or games.
I did a cleaning on the pc and it wasn't dusty.
Tried to restart many times, but the screen is still black and the GPU fans spins.
The Mobo lights the "VGA" LED
I had browser open and the desktop application of Spotify, and was about to open Minecraft.
My Specs are:
Ryzen 5 1400 (no overclock)
1x16 GB, 1x4 GB Sillicon Power DDR4 2133Mhz RAM
ASROCK PHANTOM GAMING RX580 8GB
MSI B450m GAMING PLUS MAX
Thermaltake 600W PSU
120GB Crucial SSD
2TB WD HDD
1TB Seagate Barracuda

 

[Colif]

can you try GPU in another PC and see if it works?

 

[Limoero]

can you try GPU in another PC and see if it works?

I'm using an old GPU i've had here and it works fine.

 

[Colif]

I'm using an old GPU i've had here and it works fine.

for clarity: that old one isn't the one mentioned in build?
what is other card?
main reason I suggested other PC was to see if it was card. If the only change you made was use an old card, it could be the 580

does screen come on at all? does it show bios flash screen and then go black? or always black?

 

[Limoero]

for clarity: that old one isn't the one mentioned in build?
what is other card?
main reason I suggested other PC was to see if it was card. If the only change you made was use an old card, it could be the 580

does screen come on at all? does it show bios flash screen and then go black? or always black?

I forgot to post the situation, but the GPU i relplaced the RX580 is a GTX 1050.
It runs perfectly using the older GPU.
It doesn't appear nothing on the screen using the 580, not even the bios screen, just a straight black screen.

 

[Colif]

Unless you can try in another PC, I think the card is dead.

did squares look like this? link

 

[Limoero]

Unless you can try in another PC, I think the card is dead.

did squares look like this? link

I don't remember that well because it happened so fast, but it was like that, but instead it were squares.

 

[Limoero]

Unless you can try in another PC, I think the card is dead.

did squares look like this? link

Thank you for your help, but it was an oxidation on the GPU's PCI-E connection.
My cousin helped me, he used an eraser to clean the GPU's PCI-E connections.