WIN10 system to open Windows Defender built-in anti-virus software method

1, we in the computer "start" below click "All Programs" Enter and then click "Windows System" as shown in the following figure;

2, then in the system below we will see a "Windows Defender" and then we click to enter;

3, this opened the WIN10 with anti-virus software Windows Defender, scanning options Select "Quick Scan", click "Scan Now";

4, you can see the scan progress bar;

5, set the attention to open real-time protection.

All right, we can not install anti-virus software, this is not very convenient simple ah.