Does your computer randomly crash and restart?
My computer (about three years old, I guess) was randomly crashing and restarting recently, so I searched around on the Internet for the symptoms and discovered that dust could be the culprit. I contacted the manufacturer’s support center and got instructions for removing the outer case, and sure enough, there was a lot of dust, especially on the fan. Once I cleaned all the dust out, the fan quit making so much noise, and it hasn’t crashed since.
Just something to think about if you’ve had your computer for a while and are wondering whether or not you should replace it. I use mine for work, so I can’t have it crashing on me when I’m in the middle of a job. Fortunately I found that little hint and saved myself some money (for the time being, anyway).
In my experience, mostly when computers start crashing randomly, it’s usually two things — the CPU or RAM. In your case, the dust clogged up the fan and the CPU was heating up way too much.