Bought a used GPU and its not working. what could be wrong?

Discussion created by jiji on Aug 15, 2020

I just buiild a new PC and bought a 4GB powercolor AMD rx 570 of ebay. I built the PC and connected the monitor via displayport to the GPU. The PC is running but the used graphics chip is the integrated one from the ryzen 3 processor. the GPU is also not detected in the task manager and although its noted in the device manager, manually downloading drivers is not working. they only say "we don't have such a GPU installed". its also none of the bios settings as far as i can tell. so is it a wrong or broken chip?
I've attached a picture of the chipset if any of you can make sense of this. I've tested the gpu with many different cables at two different pc's and it just dowesnt get detected.
thanks in advance