I just got my 4750 and it used it for about an hour and half to drain the battery then it shut off when the battery died. So i proceeded to plug in the ac adapter and then it keep starting and restart with some errors i believe they might have been some fatal errors. so then i unplugged it from the wall and it works fine off the battary. is it possible the adapter is deffective? whats wrong please help i waited all damn week for this and now it is busted.

Turn the unit off and let the battery recharge to it's fullest. Then try running the unit. After that, remove the battery and see what happens. Then recreate your discharge/recharge scenario. If the errors only appear on the latter test, I would concur that there is a power supply issue - either the power brick or the motherboard.

thanks for the reply, i called tech support and worked through some things now i am testing my ram chips i believe it is one of them that is bad. almost positive, but thanks for the reply i appreciate it.