I have been experiencing a problem where my computer freezes usually after a few minutes of use. Firstly I rolled back to the factory install, still had the issue, tried updating, kept freezing through update process. Started using external mouse thinking the touchpad might be the issue, still froze. I think I've finally isolated the issue as being power related.
I tried removing the battery and running on AC power, machine froze. I put the battery back in and removed AC power - no issue.
So, at this stage the most simple step would be to replace the power adaptor, but before I go shelling out money I was wondering if there are other options I could try to further isolate the issue?