I'm having an issue with my display not working, computer boots up, fans spin but the screen does not react. I checked if it's plugged in properly and plugged it into different displayports but that didn't do anything.
What has changed since it worked and not worked? What were you running previous to the event? Any windows updates or driver changes? Physically moved the computer or monitor?
Tried another monitor or onboard graphics if you have then?
Have you got onboard graphics to try? Then do a clean install of GPU drivers. You could reseat your GPU also if still no luck.
Not to sound silly, but you are plugged into the GPU and not the motherboard?