Some units were customized or upgraded with dedicated low-profile PCIe cards, most commonly the NVIDIA GeForce 8400 GS or various legacy ATI/AMD Radeon cards.
: Note that the onboard Intel graphics for this model typically do not support Windows Aero (the transparent window effects), as they often lack the necessary WDDM 1.0+ driver requirements for that specific feature. Where to Find Drivers hp dc7700 graphics drivers windows 7