I purchsed a new R9 290 a few days ago but when i installed it, it wont show display on the monitors.(Monitors would just go to energy saving mode). So to troubleshoot I tried it in a different box and it worked perfectly.(I think, I cant remember I am tired now after troubleshooting for a 12hours) Its not the mobo or anything else because I plugged the old card in and the old card works, its also not windows or drivers because we just freshly wiped and re-installed windows.
I also tried different inputs, dvi, hdmi and display port. Still doesnt work, also got a new PSU since I thought it was a power issue but with the same result.
I need help, I am desperate! If this still doesnt work I will go to a computer repair store tomorrow and just pay someone to fix it.