Before WR can repair infection damage, you need to get rid of the infection.
If you have access to another machine, create a Kaspersky Rescue Disk and boot up with that.
https://support.kaspersky.co.uk/viruses/rescuediskYou may need to change the Boot order which you can do by pressing and holding F2 as you switch on.
If you are using an UEFI BIOS then you will need to disable Secure Boot.
Use the cursor keys to move to the Boot tab and use those keys to select the DVD drive then F5 or F6 to move it to the top.
Insert the rescue disk - press F10 to Save and Exit then press enter.
Use the graphics option and probably best to Ethernet connect so that it can update its Definitions.
The scan can take a number of hours to complete.