Win7 System installer prompts "Install error 0x800706d9" What to do?

Win7 System installer prompts "Install error 0x800706d9" What to do?

1, click the Start menu, and then click "Control Panel";

2, in the Control Panel will view the way to "large icon", and then click "Windows Firewall";

3, click on the left side of the firewall window "turn on or off Windows Firewall";

4, then click "Use recommended Settings";

5, in the pop-up window in the "Home or work (private) network location Settings" and "Public network location Settings" are selected as "Enable Windwos firewall."