Hello everyone. I have a custom built PC that I made about 3 years ago and so far have had no problems. Just this morning when I went to boot up my PC from sleep mode, the computer turned on fine but my monitor has been giving me DVI no signal errors. I tried rebooting my PC and replugging the dvi wires on both ends but that didn't help. I though maybe it's my gou but when I opened my PC and the gpu fans were working(not sure if that means my gpu is fine) I tried using a hdmi wire to see if maybe my Dvi wire is faulty but that didn't work either. I just tried my roku player connected through hdmi to the monitor and it worked fine! Does this mean I need a new graphics card? I have a sapphire Radeon graphics card any tips?