Pc not detecting/outputting Hdmi Problem

My pc is just not detecting my tv as a moniter, ive tested this with 3 Televisions and 3 Hdmi Cables, but nothing works. i dont know if its my tv or my pc, but its really bugging me. im using a freshly built pc running Windows 7 and specs are:

Cpu: Fx 6300

Gpu: Radeon HD 7790

MoBo: M5a78L-MUSB3

also it worked the first time i got it booted, but soon after it just stopped working...

Reinstall radeon drivers??


seems like you narrowed down everything but the motherboard.  time to RMA perhaps?  at least start a support ticket with ASUS.