I recently got a used Amd Radeon HD 7570 from Ebay, and I decided to try it out. But when I did nothing came up on my monitor, every fan and light was on like it was appearing to work but it wasn't.
My pc is a
Hewlett-Packard HP Compaq 8200 Elite SFF PC
with a core i7 2600 with 8gb ddr3