Monitor not detecting

iKENwin

Reputable
Apr 17, 2015
9
0
4,510
My second monitor is not detecting and i dont know why. my PC was built about 3 months ago and everything worked fine. About a month later the second screen wouldnt detect after waking up from sleep mode. about 2 weeks ago the monitor stopped detecting at all. Any suggestions?
parts i feel are relevent:
GIGABYTE GV-N980G1 GAMING-4GD GTX 980 4GB 256-Bit GDDR5 PCI Express 3.0
ASUS VS Series VS247H-P Black 23.6" 2ms - connected to GPU via DVI
ASUS VS Series VS247H-P Black 23.6" 2ms - connected to GPU & XBOX 1 (this is the one not working, xbox works fine!) via DVI
INSIGNIA 46'' TV (specs unknown) - connected to GPU via HDMI
OS - WINDOWS 8.1