It's not the backlight or inverter.
I'm also wondering why System Restore was not tried but the truth is that gaming is hard on laptops. We expect hardware failures after 2 years and you can try this and if it fails then the acid test is simple. Restore the laptop to it's factory condition and if it still fails, it needs repair.
My lap-> Acer travelmate 4730G.
When I was playing nfshp2 game, display dimmed for two times.
When I restart -> the resolution was low (1024*768). The screen is in left side. Not centered. I couldn't abled to change resolution. I used like that for a day (sometimes display had a blank screen).
In those times, it had another problem. When I change the brightness, it won't change it step by step. Instead when I press Fn + right or Fn + left, it change the brghtness to top most and after pressing again it come to the lowest brightness.
Now its totally blank. I can see display content with a flash light. The resolution is 1024 * 768. Also not centered, its in left side.
It work perfectly with an external monitors (I can change the resolution).
What is wrong. If it a Backlight / inverter problem, why I can't change the resolution of internal display?
Please help me.