Judging from the fact you have ATI onboard video and assuming that it's an old ATI Mobility Radeon
chipset, the AMD driver download website has the following Vista/7-compatible driver for legacy Radeon available: ATI Catalyst
I think there are good chances that this one will work for you.
As for the onboard audio it appears to be Conexant, but Conexant themselves don't offer any audio drivers for download. Let's see first about the video and then we can worry about the rest...