Disable PatchGuard & Driver Signing

[disauto]

Here's how to do it:
Hit Windows ORB in your taskbar
Run CMD (Command Prompt) in elevated mode. (Right click | Run as Administrator)
NOTE: If you have UAC (User Account Control) enabled, you will get a prompt
message. Select YES to continue.
Type the following two commands and hit Enter after each line.
bcdedit.exe -set loadoptions DDISABLE_INTEGRITY_CHECKS
bcdedit.exe -set TESTSIGNING ON
You will receive The operation completed successfully message for both commands.
Restart you computer for the changes to take effect.
Now, you should be able to install unsigned drivers on Windows 7 SP1.
If you're like me, you might want to revert changes that we've just made after
successful installation of unsigned drivers. To do so repeat the steps above and
in the Command Prompt enter the following commands:
bcdedit.exe -set loadoptions DENABLE_INTEGRITY_CHECKS
bcdedit.exe -set TESTSIGNING OFF