In the Windows Logo program, the OEM and WHQL have very different responsibilities. Understanding these responsibilities is critical for your systems to move smoothly through the logo process. Below is a list outlining the major OEM and WHQL responsibilities:

OEM

1. Run the System Tests
   
   Most OEM systems are eligible for PC 99 testing, therefore, the responsibility of running the tests falls to the OEM. These tests take some time to run, and MUST be run on all Microsoft operating systems that are required. For a list of the operating systems that are rquired for each OS, see System Submission Procedures.
   
   
2. Debug and fix problems found by WHQL tests
   
   Test failures should always be taken seriously. Some test failures are acceptable, these are listed in the HCT Testing Errata. The OEM is ultimately responsible for fixing the problem if it is determined to be a hardware or driver issue.
   
   
3. Manage IHV devices and drivers
   
   OEMs must work closely with their IHV to manage driver updates and device changes. WHQL logos only device/driver combinations, so if the driver is changed, it must be resubmitted to WHQL for retesting. This process works best if the IHV shares the responsibility by submitting the device/driver combination for testing before the OEM ships the system. WHQL will always attempt to help wherever possible in this process by working directly with IHVs.
   
   
4. Ship only logo'd components to customers
   
   After the initial logo process is complete, additional work needs to be done if the preinstall is going to be updated with bug fixes or feature enhancements. Make sure your system ships with correctly tested and logo'd drivers.
   
   
5. Communicate with WHQL on a regular basis
   
   Communication is very important for WHQL to address OEM needs. The OEM should never hesitate to contact the appropriate support alias with questions or concersn. For a list of the WHQL aliases, see Support and Problem Resolution.

WHQL

1. Deliver tests to measure logo compliance on a regular schedule
   
   WHQL is responsible for providing tools that measure system compatibility with Microsoft operating systems and compliance to Microsoft hardware initiatives. These tests are comprehensive, but may not provide 100% coverage of these requirements, and are subject to updates.
   
   
2. Provide documentation for the tests
   
   A key tool to assist the OEM in debugging test failures is good test documentation that provides detailed information of how the test works and what is tested. For the most current HCT documentation, check out the WHQL Systems Website: http:\\www.microsoft.com\hwtest\sysdocs\
   
   
3. Provide technical assistance for the tests
   
   Occasionally, a problem may arise that the OEM has difficulty debugging. When this happens, WHQL will provide as much assistance as possible by giving additional insight into what the test is testing, and facilitate communication with the OS development teams.
   
   
4. Assist in working with IHV devices and drivers
   
   WHQL has many current programs for testing a variety of devices. WHQL will make every attempt to respond to OEM requests and provide as much information as possible.