If your computer is unable to boot and you are experiencing a black or blank screen or hang on boot with a DP 1.3 or 1.4 monitor, you can try the workarounds mentioned below to run the tool.

Avoid doing so, and check for persistence of the issue. One reader writes: "I have experienced the blank screen on wake with my MacBook Pro (1.83 GHz, extra 1GB RAM from OWC) several times.