ASUS n550jv, I want to know if its safe to play modern warfare on it lowest setting.



Yes you should be able to play on low to medium settings. Without having any issues.
 


Okay and when playing games of the sort the back end where the adapter is usually gets hot, but how hot is hot. Battery is internal.
 


It's okai Labtops usually gets hotter than towers. just make sure it does not exceed 85-87c.