1 From the Start screen, begin to type
2 When the Windows Defender app
appears in the Search results, click it.
3 On the Home tab, click either the
Quick or Full scan option.
4 Click the Scan Now button.
5 When the scan is completed, check
to see what threats, if any, were
6 Click the Close button.
You can customize your scan. Follow the steps in this task, but at step 3,
click the Custom Scan option. When you click the Scan Now button, you
can select check boxes for the drives you want to scan. For example,
you can scan only your hard disk, any DVD or removable/external drive
attached to your computer, or all drives. Click OK to run the scan