I bought my wife a HP ENVY 700-215xt Desktop PC with Windows 7.
I want to extend the monitor so she can view accounts while inputting quickbooks on other screen. I have an old Serial monitor and a DVI-D monitor. PC has Intel HD Graphics [DVI-D] and when I try to plug both in together in DVI-D and serial, the screen freezes or I get blue screen. I also tried Tritton serial to usb converter, drivers installed, which also freezes. Can you advise how I can add extended screen. I'm willing to buy something else if I have to, but don't want to waste money on the wrong hardware, so figure it best to ask first.