Clutter builds up in an operating system over time, slowing down your PC's performance. Large number of files that are not being used and Windows registry issues contribute to that. Kaspersky will alert you if the amount of this data becomes excessive, and you will be given an opportunity to decide which data to delete.
To declutter your operating system:
Open the main application window of Kaspersky.
Go to the Performance section.
In the See how to speed up your PC block, click the Start button (or View if the search was already performed).
Kaspersky performs a search and generates a report with the following contents:
Unused system files. Click the button View to view a detailed report on the operating system files that are not being used. Click the Clear button to delete these files.
Windows registry issues. Click the button View to view a detailed report on the Windows registry issues that you can delete without risking damage to the operating system. Click the Fix button to fix detected issues.
Removal of unused files and fixing the detected issues will speed up your PC.