Recently, whenever I'm on the internet, my computer operates normally and then all of a sudden, it'll freeze, and then I'll have to restart it. Some days ago, I had to do that 10 times. Why is this happening? i use windows 7 64 bit, RAM 4 GB, and Mozilla Browser.
I think that 98 out of 100 cases like this is either GPU or CPU overheating issue. Run some stress tests like FurMark and Prime95 and watch for temperatures. Of course it is better to first check and clean dust from coolers.
Using your computer may cause more damage if it is overheating. Both FurMark and Prime95 can damage your computer if it overheats.