Wpc.dll corruption after upgrade

I bought an HP a1730n with Vista Home Premium already installed. I purchased the Vista Ultimate Upgrade and performed the upgrade. Now, whenever I try to go to My Games, or run Hearts, or any of the games from the games menu, I get this message:Hearts.exe Bad Image "C:\Windows\System32\Wpc.dll is either not designed to run on Windows or it contains an error. Try installing the program again using the original installation media or contact your system administrator or the software vendor for support."I've gone to the Uninstall Programs Turn on / off Windows Features, and removed the Games, then reinstalled them, but it didn't fix the issue. Is there something else I can do?