John Luif

I found this answer in a forum and it seems to work!

“Microsoft has a service called Transient Multimon Manager (TMM). This (supposedly) makes it easier to run multiple displays. It also causes the annoying flash we all hate so much. It took me hours to pinpoint the exact process (which happened to be the Task Scheduler Engine), and even more time to pinpoint the exact task, so enjoy.

Here's how to fix that annoying black flicker on boot:


Click on the Start button (pearl? ball? orb?).
Type "Task Scheduler" and hit Enter.
On the left-hand side, click "Task Scheduler Local" (you should already be there, but just in case).
Expand "Task Scheduler Library," then "Microsoft," then "Windows," then click "MobilePC."
Up top, you'll see a task called "TMM." Click it, and on the right-hand side, click "Disable."
You're done. :)


There are slight drawbacks to the aforementioned solution:
I just tried this fix for my laptop, and the auto detection of the second monitor no longer worked. But you can still switch around to the external monitors manually though, and it seemed to work.”