Re: GPU Problem
Welcome to CF!
Get two parts you know work... another monitor and it's cable.
If you have onboard video then try connecting to that output. Some older motherboards did not have the automatic disabling of onboard graphics processing when another GPU is detected, so you may have to search your motherboard model to see if jumpers or BIOS settings need to be configured... it could also be that the GPU is pushing signal to only a single port (if multiple are avail).
Start with plugging in two items that you know work. If it works - monitor/cable is shot
Plug into different video outputs - if this works and no onboard video is present, check with the manufacturers documentation to enable other ports. If this works and onboard is present, check your BIOS settings.
Next, try a different GPU with known good Monitor, then current monitor to rule out GPU.
Try these and post back.
Humans are the only creatures that won't live up to the their potential. Give everything your all. When you die, die on E.
So I ask you, what do you intend to do now?