Hi gang...

Yesterday, my computer's cooling fan started kicking into high ever few minutes or so.
This is the cooling fan on the bottom of the tower, not the intake fan over the power supply

It did this without any warning or symptoms...

I have some rack mounted gear enclosed in a box, and I am questioning whether the cooling fans are facing the correct way. Currently, they are blowing air inside, towards the equipment. Should they be faced to where they are blowing the air out (exhausting the hot air)?

Thanks

If any of you out there is using one of these you probably have noticed the loud fan noise that comes with it.

I would like to mimize this noise or eliminate it completely if that is even an option.

Does anyone know what to do about this?

Can anyone advise me if they're running a power amp that has a cooling fan but is still very quiet?

I'd like a studio amp that can double for live performance once in a while to run some stage monitors. I doubt that any of the fan-less models, such as Hafler, are really up to the task of running full tilt in a live situation. Thanks for your suggestions!