"Lenovo support tools to help Lenovo keep your drivers up to date, and allow them to remote your PC if you give them the code
Lenovo tool to make special keypresses (such as turn on/off keyboard backlight, tweak monitor brightness, etc) not only work, but show an icon on the screen when you push the button."
But this is bloatware. Drivers can be pushed through Windows Update no need for a different Lenovo tool to be running to do this.
There shouldn't be any special key presses, volume, brightness etc. all of these are standard keys and since Windows 8 there have been on screen displays for them too.
Instead of wasting everyone's time developing these tools they should spend the time developing their laptops so that they work properly with a vanilla Windows install.