Safe Mode Uninstaller (for when you cannot uninstall normally)

When installing any software that fails to complete, Windows can sometimes refuse to boot after restart. however not all is lost as Windows can be booted in safe mode in such circumstances but the installer will not work.

to boot in safe mode you need to reset the computer and press F8 during bootup at the black screen before the windows loading page, then at the dos menu select safe mode from the list.

one windows loads in to safe mode, do the following.

To enable Windows Installer in minimal Safe Mode execute the following command in a CMD window:

REG ADD "HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\MSIServer" /VE /T REG_SZ /F /D "Service"

or for Safe Mode with network:

REG ADD "HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\MSIServer" /VE /T REG_SZ /F /D "Service"

now to finally start the MSI installer 

in CMD type net start msiserver