|"I have a DC7100 hp, and its having driver issues"|
I sure hope you didn't pay much because it's a pretty outdated system. And why would you buy a video card due to "driver issues"? It looks like there are 3 versions of the dc7100. Only the minitower will accept a full size card. Here's the specs:
Can you return the card & exchange it for one that does have a VGA port rather than using an adapter?