I have recently bought R6670 and I have an HP Slim Comp model #=s5603w, BT434AA-ABA, A1NAv6Pc. I have went into bios and change primary graphics card to PCI but the comp still has not reconized it. I need help Thamk you.
More aboutwont graphics card work
If you can try to download lastest BIOS. If that doesn't work check your motherboard slot for graphic card. Radeon 6670 is 2.1 card. Sometimes 2.1 cards doesn't work on older motherboards. You can try all ports HDMI, VGA, DVI,...
His mobo is pcie 2.0 so that is not the issue. I suspect the issue is the psu, it is only 220w.