If you suspect your computer has been infected with a virus, take the following steps:

1. Run a full system scan using your current anti-virus program.
2. Verify whether the findings from your anti-virus scan are accurate by seeking out expert opinion from reliable sources on the internet.
3. Isolate the affected computer from your network.
4. Securely backup important files on an external hard drive.
5. Reinstall the operating system, followed by all applications and backed up data.