Thank you for contacting the Intel® Communities.
If you would like to perform a BIOS update, a file would be needed for this task, this file can be found here.
Regarding the display issue, are you experiencing the issue with different displays?
-If doable, please test it with different monitors.
-If you are using adapters, please try using a straight connection (Mini-DP 1.2 Mini-HDMI 1.4a to full size DP/HDMI).
-Make sure you are using the latest graphics driver for your unit.
-You could also test uninstalling the graphics driver and then let windows Install the default driver.
-Test the system with different cables.