I'm not getting a signal from my amd 6950 2gb ?

persona

Honorable
Feb 18, 2012
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10,630
hello, i have just built a new gaming rig. my old rig was still using a vga cable but this new one is using a dvi cable. i used an HDMI cord but i didn't get a signal on my tv, the GPU is running fine but i still can't get a signal from the hdmi cable. do i need to use a dvi cable before i use an HDMI cable ? also my specs are

i5 2500
8 gb g skill ripjaws 1333 Mhz
corsair enthusiast 750W psu
XFX amd radeon hd 6950 2gb
coolermaster hyper 212 plus
plextor dvd drive/burner
crucial m4 64 gb SSD
seagate barracuda 1TB HD
coolermaster storm enforcer
asrock extreme3 gen3 motherboard

also i plugged in the vga cord to my motherbard but i still didn't get a signal
 

persona

Honorable
Feb 18, 2012
73
0
10,630
hears the issue, i can't do anything because i can't see anything on the screen so i can't update or do anything. and i just finished building this gaming rig an hour ago. so far everything works except i just can't see anything on screen. also i used both an HDMI cable and a VGA cable. i plugged the vga cable into my motherboard but no signal. so i did the same thing with the HDMI cable, i plugged it into the motherboard and still nothing. so then i plugged the hdmi cable into the graphics card and nothing happened. my graphics card dosen't support VGA cables. Only DVI cables because it supports more than 1 monitor. the graphics card is working fine but some reason it just won't show anything on my screen with the HDMI cable. do i need to use the DVI cable first then update my drivers for HDMI ?