[A diagnostic step you have omitted which can elimnate the drivers/software/OS as the culprit...
Run the computer connected to an external monitor.
If it still blanks out then the problem is software/OS/Drivers.
If it doesn't it's a hardware problem.
The object of trouble shooting it to ELIMINATE things by LOGIC.
It seems to me that everyone here is using what I call "dartboard diagnostics"
Guessing wastes time, creates frustration and does NOT get the problem resolved.
educated guesses should be tempered with eliminating as many things as possible
as quickly as possible, and external monitor will eliminate the Display, inverter and cable
OR Confirm Software//OS video driver or grafix controller.
but I should mention I keep a 32oz hammer in the drawer under my
computer repair bench.... It "persuades" recalcitrant computers that
I will only tolerate so much lack of cooperation before I permenantly
eliminate their ability to frustrate me.