Laptop, ASUS N61JQ
Windows7 - 64bit
As of the last two weeks or so, I've been experiencing random shutdowns and freezes on this computer. They occur in two 'ways': a) when I've used the computer for an amount of time, having successfully logged in [timeframe can range from 3 minutes in to hours), or b) during startup, where the computer just turns itself back off again.
I haven't been getting and bleeps or bloops from the computer, nor any bluescreens - with a) I first notice when the fan turns off, and the computer becomes unresponsive [sometimes the shutdown button works when I hold it down for 5 seconds, sometimes it doesn't and I have to cut power to it].
I HAVE been having battery problems - it has been telling me to get a new battery - but how would a battery problem explain the freezing which can go on indefinitely?
I've tried using a checkdisk and a windows problem-checker as directed on startup, but neither of them seem to have changed much. Note that the problem still occurs even when I remove the battery entirely and just plug the computer in.
Thanks for reading!