You can try blowing compressed air through the fan, might be dust buildup causing the noise. If that doesn't work replace the fan, shouldn't be too hard to do yourself, or I imagine most computer repair shops will do it for you.
You can try blowing compressed air through the fan, might be dust buildup causing the noise. If that doesn't work replace the fan, shouldn't be too hard to do yourself, or I imagine most computer repair shops will do it for you.