Win7 system downloaded from the Internet can not be installed software how to do

What can I do if the software downloaded from the Internet cannot be installed?

1. Start - All - Accessories - Command prompt;

2. Right click - Run as administrator; Br>

3. Enter the following and press reg deleteHKLMSOFTWAREMicrosoftSQMClientWindowsDisabledSessions /va /f;

4. Restart your Vista or Win7 system.

5, some friends may say, this is not the registry operation, yes, this is the operation of the registry through the command line (command line program requires administrator identity). Of course, you can also open the registry editor by running regedit.exe and find HKEY_LOCAL_MACHINESOFTWAREMicrosoftSQMClientWindowsDisabledSessions

6. Delete this item and restart it.