HP 5610 ALLINONE - WIA FILE DRIVER REQUIRED

Hi

My HP 5610 worked fine for many years. On the 13th April 2014 I updated Windows 7 and then my nightmare started. The HP does not scan or print. It shows it needs a WIA driver. I tried to uninstall printer but it only uninstalled partially. Now it does not want to reinstall again. I tried HP scan doctor but it gives the following error message "The installer cannot access this registry key. Please ensure that the installer has access to the registry and click Retry.

Registry Key : HKEY_LOCAL_MACHINE\SYSTEM. 

I tried help from microsoft - nothing

I tried registry scan - nothing

I tred installing other printers - nothing

PLEASE HELP !