2 blue vertical lines at startup

[guykrispel]

Hey, I've had a problem during the last couple of days with my computer. I start it up, and 2 vertical blue lines uppear on the monitor with the BIOS and windows symbol during the startup. And it doesn't get any further than this, it won't even get to the lock screen, just blank after the BIOS and windows.
Does anybody know what's this about?

 

[popatim]

Its possibel switching over to integrated / motherbd video if your pc has it. Try connecting the monitor there and see what happens if you have this.