a year ago I had a virus or malware, used the Kaspersky tool, eventually uninstalled that tool. When I do a defragmentation it shows 44,52 fragments that cannot be defragmented. That is 4GB and it shows \Windows\System32\Drivers\fidbox.dat I found the fidbox.dat on Google and it seems to be files related to the Kaspersky scan. I would like to remove this, the 4GB is a lot and I am trying to trim down my computer. Thank you.