Issues on start up- 1 long beep 3 short beeps

Hey guys I'm fairly new to this so bare with me please. I'm in the middle of attempting to build a decent little gaming pc. I've got it all put together now and here are the components.

Mobo-GIGABYTE 990FXA-UD3
CPU- AMD FX 6300
GPU- XFX HD R7970 BLACK EDITION OC
RAM- 8 gigs (2×4) 1600mhz corsair vengeance
PSU- ANTEC HIGH CURRENT PRO 750W
HDD- KINGSTON 300v 120gb SSD

Nothing is loaded on the hdd yet. Computer is freshly put together. But when I start up the pc, the fans and lights all work. Then I get one long beep and 3 short beeps with no signal on the screen. I'm seeing from some of the research I've done that this is a gpu error. Is this true or does anyone else have any other ideas or solutions? Any help would be fantastic. Thank you