So I think it's the cooling fan? Every now and again my laptop just starts whizzing really loud as if I were doing something really intensive like playing a game (which is pretty normal) - when in reality all I'm doing is just on microsoft word or something like that. The actual temp of my laptop is really cool and there's no performance decrease when it happens. Is there a way to see what's going on? I tried the task manager but I'm not sure on how to interpret any of the CPU usage data.
That happened to me until I opened up my laptop and found blockages in the fan
How much RAM is your computer using all at once? If it's not much, then your cooling fan is either generally loud or its inefficient or broken.
Go to Task Manager and you should be able to see your RAM usage by looking at your computer performance.
This currently happened to mine and it is custom made. The problem is due to overheating. So what I did is cut down the amount of programs running using task manager, opened the laptop up and cleaned the dust using compressed air and it worked.
If the problem keeps persisting then, contact the company you got it from, and also think about buying a cooling pad for your laptop.
Have you tried looking on Task manager to see if anything unusual is running?
Also, have you tried downloading/installing Core Temp? That will tell you what the CPU temperatures are, so will give an indication as to whether it is overheating, or whether it is something else.