Hello,
-Your OS is infected with viruses.Please remove viruses from that PC.
- If you have another PC .So please connect this harddrive to that PC & scan whole hard drive.
- Make sure that the second PC will be updated with antivirus.
Or
- Reinstall your OS & install only a single antivirus with updated & scan your system.
- Secondly delete unwanted data.
Regards.
Tushar Kaskhedikar