First download Malwarebytes from https://www.malwarebytes.com/mwb-download/thankyou

Once downloaded double click to install.

You may then get the following screen, click yes to continue.

Choose Install.

Choose me or my family, then click next.

Choose Skip this for now.

The program will install.

Once complete click Done.

After a few moments the program will now launch, click get started

Select Scan.

The scan will start running, whilst running your pc will be a little slower.

If anything is found you can quarantine the file or files, you may also be asked to reboot to complete the process.