Hello, i have purchased g750js several days ago and i'm having some strange issues with it.
There is no easy and short explanation for it. I use instant on and when i unplug it from the power brick and use it on battery power all is fine but when i want to plug it in the outlet it simply stays on battery power (the led doesn't light on) untill i unplug the charger from the outlet and replug it again, and than everything is well, it resumes to work from the outlet. I first assumed it's instant on's fault, i uninstaled it, than i uninstalled usb charger+, same thing. Than i changed the power outlet still the problem persisted. I shut it down completly (to eliminate windows from the problem) and left it on battery still same thing. If i plug it after a short period (15 mins or so) it works, if i leave it for awhile it doesn't and i have to unplug the charger from the wall and plug it again. Also i have just noticed, if i unplug the charger several times, and than plug it right back in aafter a random number, let's say 7-8 times it does the same. I really don't know what is the problem. Is it the power brick's fault (not holding on sufficient current) is it the notebook... I really don't know, it a shame for a expencive piece of electronics to behave like this.

Can someone please help me, what can be the problem, the laptop the charger....i have just spent 3 days on installing and tweaking and i have noticed the problem later on. :s