I sell HP comps at work and all the ones we carry have on board Video only there is a few models with low end Nvidia cards but only a few the easy way to check is look at the back of the comp if you are pluging in your video cable in the middel on th left side around hte audio outputs/inputs (USB portd are near there too) and the connection for your monitor cable (VGA) is vertical then its the on board but if its at the down lower where the other slots (slot covers for PCI slots) and the conneciton for your monitor is horizontal then it most likly a add in card


hope that helps

either way all the models I have seen have a AGP slot free so you can go get a decent vid card and put it in and your probs will go away