Article ID: 288302 - View products that this article applies to.
The Microcode Update device is an interface between the operating system and an Intel processor based on the x86 architecture. This device provides the latest microcode updates for the processor if the BIOS does not already contain this information.
If the computer that you are using does not contain the processor described in the "Summary" section of this article, or if your BIOS is up to date with Intel's latest microcode, the Microcode Update device is not initiated; the device is unloaded to free up resources. Device Manager marks the device with a code 24 status message:
The device is not present, is not working properly, or does not have all its drivers installed.If the microcode on your computer is current, the drivers are unloaded by design. In this case, the code 24 status message is expected, and it does not indicate a problem. The device is marked as hidden and is not visible by default. Therefore, when the code 24 status message occurs, the message is not displayed when you are using the default configuration.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/936357/ )A microcode reliability update is available that improves the reliability of systems that use Intel processors