Laptop goes into random sleep modes or screen goes blank randomly

okay I have a ASUS G72GX Republic of Gamers Laptop.

I can be browsing the web watching a movie or even playing World of Warcraft and this thing will either go into sleep mode or the screen will go blank like 2 to 3 times my keyboard lights will switch off as well. I have to move my mouse or hit any key to get the screen to come back. I have done EVERYTHING Iknow of to stop this EVERY thing in the Power settings is turned off This shouldn't be happening at all... I do not know what to do lol it is driving me crazy... Please some one give me some intel on what could be the problem...
 
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