Graphics cards stopped responding to the HDMI cable.
Hey guys, I've recently cleaned my PC with a brush (gently), I've done this multiple times but this time the PC stopped responding to the HDMI cable, the screen says "no signal" but it works with the regular old cables.
If HDMI works with the old cables and not the one you are using, it seems like the cable is bad or not compatible. but just guessing since I don't know what GPU card you have installed or CPU/APU or Motheboard Make & Model.
Also are you using a Adapter to connect your Monitor via HDMI?