No signal to Tv after restarting computer

Hey guys,

so I have a new computer, that was working fine this past week. It was hooked through HDMI to my TV screen, it was working alright until it lost all sound, I restarted the computer to fix the problem but now i dont get a signal at all.

my build is.

CPU
intel i7 - 4770


MB
ASUS Maximus VI Impact


CASE
Bitfenix Prodigy White Storm


PSU
Corsair CX-600m


RAM
ADATA XPG V2 Gold 16GB


SSD
Corsair Force Series LS 240GB SSD


HDD
Seagate 3.5" Barracuda 2TB


GPU
Gigabyte Radeon R9 290 OC edition



CPU Cooler
Corsair Hydro Series H100i

I tried hooking up my ps3 to the TV with the same cable, and that worked fine, so its not the cable that's bad, and its not the TV, its definitely the computer.

Ive also tried using a VGA cable, but i still have the same problem.