Did you go to hp.com and chat with them about this? They made it, they may know which driver to pick.
I have a Compaq Presario V5000 1.8GHz 2GB Memory with integrated ATI Radeon Mobility Xpress 200 series graphics with Windows 7 64-Bit Installed.
When I close and then re-open the lid to my laptop, my desktop wallpaper goes black and my Taskbar icons change to random icons i.e. google crome turns to the notepad icon, gmail turns to skype, etc. Restarting with temporarily remedy the issue but it becomes corrupted again after closing and opening the lid.
My Presario is about 4 years old and it appears to me that the ATI drivers for the Radeon Mobility Xpress 200 Series seem to be the problem. If I uninstall the drivers windows seems more responsive (graphics) and the walpaper and taskbar issues go away but I only have crippling resolution options to choose from.
I've been battling with this for months, does anyone have any suggestions on how to resolve this issue?

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