Windows Medkit is mainly created to delete viruses and fix windows's registry after virus infection.
It will help you to remove the errors that caused by the virus but not the virus first you must remove the virus by the traditional ways (Antivirus or Manually).
"Windows Medkit" will allow you to fix:
Fixes
1. Inimpactful show hidden files.
2. Inimpactful show system files.
3. No show hidden files.
4. No show system files.
5. No Folder Options.
6. No Internet Options on IE.
7. Delete Autorun Files.
Management
1. Manage Tasks
2. Manage Sartup.
File System
1. Detective Explorer
2. Delete/Show Hidden file.
3. Delete/Show File Have name.
Services
1. Prevent Shutdown
2. Prevent Tasks
3. Drives Dog
4. Files Dog

The license of this software is Freeware, you can free download and free use this disk cleanup software.