I was messing around in my case with some cable management and getting rid of some dust. When I turned my computer back on it made a horrible single long beeping sound, I opened up my case and realised I'd forgotten to plug the power cable into my graphics card. I plugged the power cable in and turned it on, now there is no beeping but no video output. I think I might of killed it. My only real idea at the moment is to try and get access to another computer from a friend and see if my graphics card works in another machine or if another graphics card works in my machine. Anyone know of a way to solve my issue, or to properly diagnose the problem as it might not actually my my gpu? Extra thought, after this I swear to never open up and mess with my hardware unless absolutely nessescary.