Re: Can't Uninstall Officejet Pro 8500 A909G-Uninstaller Quits Responding

Here are some steps to clean the OS. 
Then use the HP install wizard to install the 8600.  (disable any AV program b4)
 
1. Press the Windows key + R on the keyboard to bring up the run menu.
2. Type %programfiles% in the run field and click OK.
3. Delete any HP/Hewlett Packard folders.
4. Press the Windows key + R on the keyboard to bring up the run menu.
5. Type %programfiles(x86)% in the run field, and click OK. This is for 64 bit systems only. 
6. Delete any HP/Hewlett Packard folders.
7. Press the Windows key + R on the keyboard to bring up the run menu.
8. Type %appdata% in the run field, and click OK.
9. Delete any HP/Hewlett Packard folders.
10. Press the Windows key + R on the keyboard to bring up the run menu.
11. Type %programdata% in the run field. 
12. Delete any HP/Hewlett Packard folders.
13. Press the Windows key + R on the keyboard to bring up the run menu.
14. Type regedit in the run field.
15. Delete any HP/Hewlett Packard folders or keys that you find. (backup the reg file b4)
16. Run Disk cleanup from Administrative Tools