Download Windows Defender Offline and install it to a CD, DVD, or USB flash drive.

To get started, find a blank CD, DVD, or USB flash drive with at least 250 MB of free space, and then run the tool. You'll be guided through the steps to聽create the removable media.

Note:聽We recommend that you download Windows Defender Offline and create the CD, DVD, or USB flash drive on a PC that isn't infected with malware鈥攖he malware can interfere with the media creation.

Download the 32-bit version

Download the 64-bit version

If you're not sure which version to download, see Is my PC running the 32-bit or 64-bit version of Windows?

Restart your PC using the Windows Defender Offline media. This means having the CD, DVD, or flash drive you created in step 1 inserted in the PC when you restart it. Follow the prompts to boot from the drive containing this media.

Scan your PC for viruses and other malware.

Remove any malware that's found from your PC.