I just got a new computer from a friend and I plugged in my monitor through VGA cable and this notification is popping up and not letting me get through.this computer has an add-in graphics card, but the monitor cable is not lugged into the integrated video connector. To attach the monitor cable to the add-in graphics cards:

Shut down computer

Plug monitor cable into add in graphics card connector ( this may require a video adapter or video adapter cable

Turn on the computer.

What should i do? I already tried pressing F2. but it will say entering menu, but end up going to the screen mentioned above??? PLEASE RESPOND ASAP