Days like this, I want to throw windows through the window

For three hours now, I try to reinstall the driver for my Wacom tablet. Multiple install, uninstall, registry cleaning, safe mode reboot for erasing protected files... No error message during the installation, no message in the system logs, but no uninstaller appears into the add/remove control panel. And the Wacom control panel fails with a miserable "No driver found" message.

And eventually, a lightning strikes me, some months ago, I set the Wacom NT service to Manual...