How to Scan Your Computer for Spyware with Windows Defender
Click the Start button and type Defender in the Search Programs and Files text box.
A list of search results appears.
Click Windows Defender in the search results.
Windows Defender is launched and the Windows Defender window appears.
Click the Scan button at the top of the window.
Windows Defender begins to scan your computer for spyware.
View the results of the scan.
Close the Windows Defender window when you’re done.