My friend has 2 vga ports on her computer. she says the monitor she has wont work on 1 port but will work on the other port for 15 -30 minutes then it stops the monitor. she brought it to a computer guy and he said that the other vga port is for a video card he told her that if she did not turn it off when moving the monitor cable. The computer guy said that she broke it is this real or is he just trying to get some money from her i have never heard of a vha port for a video card