Do this by clicking on the shortcut icon on your desktop. Upon opening the program, you can choose between tabs in the top portion of the window. ” You should be taken to a screen that will let you initiate the scan. Malwarebytes will then prompt you to select which drive on your computer to scan. Choose the drive you installed Chrome on, as well as the system files. This is typically drive C:, but you can scan all your drives to be thorough. Click the “Scan” button to begin searching for viruses to obliterate. Just wait for the scanning to finish. Upon finishing, the software will ask you what actions to take regarding any threats detected. You can select the action by clicking the drop-down menu for each detected threat under the Action column.  Choose “Quarantine All” in the lower-left corner of the window to set the action for all threats to quarantine. This will remove the threats from the drive and store them in an isolated location where they cannot interact with your system files. You can delete a threat by selecting “Delete” from the drop-down menu under the Action column. Click on “Apply” and the software will perform the actions you assigned to each threat. Just hitting the X button in the upper-right corner of the software's window. Once the antivirus program is closed, you can restart your computer.

Summary:
Launch Malwarebytes. Select “Scan. Select a drive to scan. Start scanning. Select an action. Apply the action selected. Close the software and restart the computer.