You only mention HP Officejet 5610 but there are different drivers for:
HP Officejet 5610
HP Officejet 5610v
HP Officejet 5610xi

start here

Once you are looking at the exact version try "mdfix01.exe error" (without the quotes) as the "question or keyword" filter.

Since the HP drivers install via Windows Installer you might FIRST try the Windows Installer Cleanup utility.