Hi, to help you, we need more information about what happened on your system. The easiest way to collect the needed information is to use our application. Please execute our log collector from the following path:
C:\Program Files\AVAST Software\Driver Updater\dulogcollector.exe
Please send the logs to us using your email address. Then send me direct message here in this board and inform me about the email address you used - so I can access your logs.
By the way: Our Driver Updater automatically creates a backup copy of each driver before the new driver is installed. When you select a driver in the driver overview, you can see which driver versions are available. If only one is displayed, then this driver has not been updated. Otherwise, you can install another one from the backup.