In my system I built brand new 2 months ago I had a 500gb hard drive and 120GB SSD. I just bought a optiplex 790 with a i7 2600 in it. So I removed my hard drive and SSD from my new build and put it into the optiplex 790. The SSD shows up in the boot options but when I select it to boot from their all the shows up is a black screen with a blinking _ in the top left corner and continues that forever. Can someone please help me?