Each "thread" might hold the relevant information. By spreading your issues across many discussions, the forum might not see the underlying issue.
It may work if you had a virus issue you needed to clear up and then a broken keyboard to deal with, but even that could be vaguely related.
The dual display chips that are in that box, can overwhelm most users as both would have to be current capable of running the software.
Beyond that, it's unclear if you followed directions.
NOWHERE did I read that you changed the BIOS primary display. NOWHERE have I read your machine's bios is of a certain revision along with make/model so the forum can doublecheck your work.