Lenovo System Update for Windows 10 seems to work pretty well and only installs system drivers without bloatware such as McAfee (although there are one or two very minor bugs with this program which I list below).

I have been sceptical about Automatic Update Programs which haven’t worked very well when I tested them in the past, particularly with older Windows Versions and written guides instructing users to manually install drivers. Users have therefore been confused as to which drivers to download and not to download. In newer systems, systems manufactured in 2012 or later Lenovo may have some newer drivers than Microsoft automatically obtain on their drivers and downloads page however Microsoft may also have included newer drivers than Lenovo list on their drivers and downloads page. In older systems, which Lenovo do not officially support to run Windows 10, Windows 10 likely has newer drivers than Lenovo offer and everything will usually work well with the drivers Windows 10 automatically obtains. This will give base functionality on most systems. Windows 10 has a number of inbuilt system drivers and it will also obtains many system drivers from Windows Update.

Lenovo system update windows 8.1