In Windows 8, 7 and Vista, you will not be able to load a driver that does not have a Driver Signature. Driver Signature is a technique employed to verify the identity of the software manufacturer and their associated hardware device driver so that end user’s system is protected from malicious malware that has a potential to run at the lowest level of the operating system.
Sometimes you genuinely know that the driver is from a trusted publisher and you are stuck with this ridge rule. Well this is how you disable the “Driver Signature” check function.