died gpu

I have an gtx 780 3gb that died 2 nights ago. I was in the middle of watching youtube when I suddently lost signal and both of my monitors went black. My monitors remain pitch black after restart and shut down/start. I did the following to make sure it is the gpu that is causing this -I...

Yesterday me and my cousin were installing a new cpu in his pc. When everything was done, he plugged the pc in the same stabilizer he uses everyday and the screen in a new socket extension he bought. The pc kept turning on and off, so we took the pc to a specialized store and the technician...

When I turn on my computer it frequently won't show any video and keyboard and mouse won't show any lights whatsoever. (sometimes everything works fine though, it's random). I tried only cpu+psu+mobo+ram and still no video (though mobo lights and fans seem to work) I took a picture of the...