Here they are two ways to backup Windows 10 drivers:
1. Start --> Cmd -->
dism /online /export-driver /destination:d:\drivers-backup
2. Start PowerShell as Administrator -->
Export-WindowsDriver -Online -Destination D:\Drivers-Backup
Driver backup restore can be done from device manager:
start --> devmgmt.msc --> right click on device where you need to update driver --> update Driver Software ... ---> Browse my computer for driver software