So I just hooked up my sons gaming rig next to mine and I went to update his NVIDIA geforce 550TI graphics card from the official website and I did a clean install. Everything went fine and it asked for a restart and I said no thanks do it later. I went to run my sons game - EnemyTerritory:QuakeWars and a bunch of errors popped up, so I restarted and now my monitor gets nothing from my video card. Video card not outputting to my monitor. Nothing changed in the hardware or wiring, so obviously I messed something up with incorrectly doing this update. I cant get a picture, how am I supposed to fix this?