actually i was playing fifa12. after the 1st half is over the monitor goes into power save mode but i can hear the background music and all..but alf f4 doesnt help me closing the program too.. i hav to just restart the system.!!
Are you still having this problem?
I am currently having the same problem, except it does it every time I try to play any game (Currently have only tried with dx9 games, could be the problem).
Every time, pc works fine, load the game, and all of a sudden "POWER SAVE MODE"
So now I have this $3000 Facebook machine.