Consider the following scenario:

• You are running a Windows Vista-based computer that has multiple display adapters in a Linked Display Adapter (LDA) configuration.
• You use the Driver Test Manager tool on the computer to run a Windows Hardware Quality Lab (WHQL) test that includes a Logo stress subtest.

In this scenario, the Logo stress subtest triggers a Windows Display Driver Model (WDDM) aperture corruption. Therefore, the WHQL test does not finish successfully.