Level 4
Iobit Driver Booster 4.1 (the license also works on the latest version 4.2) is a driver updating and backup tool to ensure you have the latest drivers, or backups of your existing ones.

I have been using this for a number of years and found it good, giving no driver issues. The main reason I think its trouble free is that it has an option (which by default is ticked in settings) to only notify and download drivers that have passed Microsoft's WHQL tests.

This is a 1 year license, so even if you downloaded it around Xmas (where they were offering 6 month licenses) its still worth getting to extend the license.