I purchased the TimelineX 4820TG probably about 2 years ago and up until now I have really had no complaints. However in the past week or so the laptop would just randomly shut itself off. This would occur whenever I had it plugged in and the battery was not in it because I usually just use it at home. Something weird about this problem is that it would occur when I was doing basic tasks like web browsing etc, so I dont think overheating is the issue but im not certain of anything. After having it shutdown on me a few times I just decided to put the battery in and leave the laptop plugged in because I like to play games pretty regularly and it has not shut off on me once since. What could be the cause of these random shutdowns?