I came home yesterday and turned on my PC in the living room (hooked up to my TV) and much to my surprise it now seems like it's giving "No Signal" to the TV. I tried connecting it to a different display (I use a DVI-to-HDMI cable for my GTX 500 Ti, the motherboard has no on-board video) and still got the same message on the second display saying "No Signal". Both displays work with other devices so I know it's not them.
I thought maybe my PSU wasn't putting out enough juice, so I ordered a new one. After disconnecting and removing my current PSU, I hooked up the new one and it's still giving me "No Signal" on my display. I don't have another GPU to swap out with mine to see if that might be the issue, so I'm really hoping that's not what's wrong.
Any ideas what it could be now....?