I've got an Asus 1201N netbook. My desktop died so I've been using it as my only computer. Fairly recently it's started shutting down at random. The shut down is a complete and immediate like pulling the plug on a desktop. Sometimes it will freeze for a few seconds before doing this.
Usually only happens when I'm outputting to my monitor via the HDMI port. Also usually only happens when I'm doing something like watching HD video or playing a game full-screen. It has happened doing neither, but usually after it's been on for awhile (4-6 hours uptime). Today it shut off within 5 minutes of turning it on while I was about to work on a paper.
I did upgrade the RAM in the laptop to 4gb Gskill RAM, but otherwise no modifications. Since my desktop died I've been using it a lot more and putting more strain on it, particularly the graphics. I'd build a new desktop but I can't afford to right now.
I bought it less than a year ago so it should still be under warranty. Should I call Asus or anyone have any suggestions I can try without voiding the warranty. I really can't afford not to have a computer at least as powerful as that for more than a few days, I figure it will be a few weeks to months if I have to send it in to Asus.