Gpu working but no output

[WuzzyXY]

I bought a used gpu recently, the first one had some problems so i sent it back, the guy sent me another one, that one also had no output but it spins and lights up, second one too he sent me 5 in total and aaaall of them have the same problem and everyone i send back he says it works, of course i have a felling its my pc but, i tried it on a ryzen based system on a system with lga 1150 and one with lga 1155 and they do the same thing, everything works like it should but no output.

[MCalladine]

Were the cards listed as Mining cards as this can affect the display on the card and they could be damaged from the constant heat from bitcoin (or similar) mining and when he sends you each card have you checked serial numbers to make sure h seller isn't sending you the same card over and over.

[WuzzyXY]

1 minute ago, MCalladine said:

Were the cards listed as Mining cards as this can affect the display on the card and they could be damaged from the constant heat from bitcoin (or similar) mining and when he sends you each card have you checked serial numbers to make sure h seller isn't sending you the same card over and over.

Is there any way of fixing it, and he did say they were mined but he send 2 that werent

 

[MCalladine]

check with the seller if the VBios was flashed as this is common with miners as to disable the output to have more power for GPU processing you may need a way to flash the VBios to reset it and check all the stickers and etched markings to double check the card itself before bios flashing as you will need the brand/exact card to do the vbios flash.

[WuzzyXY]

10 minutes ago, MCalladine said:

check with the seller if the VBios was flashed as this is common with miners as to disable the output to have more power for GPU processing you may need a way to flash the VBios to reset it and check all the stickers and etched markings to double check the card itself before bios flashing as you will need the brand/exact card to do the vbios flash.

Ill try to flash it

[WuzzyXY]

47 minutes ago, MCalladine said:

check with the seller if the VBios was flashed as this is common with miners as to disable the output to have more power for GPU processing you may need a way to flash the VBios to reset it and check all the stickers and etched markings to double check the card itself before bios flashing as you will need the brand/exact card to do the vbios flash.

i did it, it said vbios already installed (or something like that) and then if i restart it says thread stuck in device driver (

(blue screen)