In the Open box, type msiexec /unreg, and then click OK.

Follow these steps to reset the registry settings and options for Windows Installer.When the uninstall has completed restart the computer.If you have a non-HP computer run the L4uninstall.exe If you have an HP computer run the 元uninstall.exe.Look for, and open the folder starting with 7z (Example: 7zS2356).

My own suggestion would be to try a Clean Boot, and then after the computer restarts, access your Control Panel and uninstall the tool. Type %temp% and hit Enter, look for the 7z folders and delete them (you can delete all files and folders from here, if you would like).I read about the computer troubles you are having and cannot remove the Print and Scan Dr. HP+ printers are ready when you are with improved connectivity utilizing Smart Driver and Print/Scan Doctor technology, more secure with Smart Security technology, more productive through HP Smart Advance features included for 2 years, and more sustainable by enabling Forest First printing and net-zero deforestation prints.

HP ScanJet 5400/5470/5490 PrecisionScan Pro Software/Driver - Parallel and USB. From my knowledge and use the PSDr does not install on the computer, it will extract temporary files each time the icon is opened.If you would like to delete the temporary files, you can press the Windows and R buttons on the keyboard (from the desktop) and it will open the Run box. Install Windows drivers and scanning software for your HP ScanJet 5400 Series scanner. I see you are unable to scan / install with the HP Officejet Pro 8600 onto your Windows 8.1 computer, I would like to offer a hand.I would like you to run the HP Printer Install Wizard on the computer to acquire the software, it will download and start the install for you.As for removing the PSDr from your computer, you should be able to just drag the icon to your trash can (on the desktop).

Hp print and scan doctor 4.8