A little computer help please?

So, I have been wanting two monitors run off the same computer for a while, and yesterday went to Best Buy to see if they had a vid card that would do that. Well, according to them, I already have one in my computer.

They sold me a HDMI cable, and the old style cable is hooked to one monitor and the HDMI is hooked to the other one. When I was booting, both monitors did display some text but now that it is fully up and running, I only get stuff on one monitor; the one that uses the old style cable.

So, I went in to the place where you set all the screen parameters, by using the right click on my desk top. Lo and behold the computer recognizes two monitors, but it will still only use one.

Is there an easy and cheap fix for this? Please?

Khadijah

Click Like or Love to appropriately show your appreciation for this post: