Your Acer Aspire, like any other desktop
computer system, contains fans inside the case to help vent the heat generated
by the internal components.
These fans generally operate quietly and
reliably, working in the background to prevent your computer from overheating.
A fan that sounds excessively loud could
indicate a problem such as overheating or loose internal components, or it
could simply be a normally loud fan.
The key to differentiating between the two
involves looking for additional clues from your computer.
Due to computer configuration and build quality, the fans
in some desktops sound louder than others.
Depending on what other brands of computers you've owned or
have had experience with, the fan in the Acer may sound louder, when it's
actually functioning perfectly.
The fan will run to keep the inside of the computer from
overheating, so periodic runs are normal. If the fan runs for long periods or
very often, you may have a deeper problem.
Fan Damage and Overheating
A fan can sound loud due to damage, such as broken blades
or to a build-up of dirt that impedes normal operation.
This dirt, as well as normal wear and usage, can wear away
the lubricant coating on the fan's internal shaft, causing the blades to make
excessive noise as they turn. In many cases, a loud fan indicates that the
computer is overheating, causing the fan to run more often than usual to try
and cool the system.
Depending on the types of components and upgrades within
your Acer computer, your current fan may be too small and weak to handle the
heat output, and require upgrading to a larger, more powerful fan.
Take note of when the fan turns on and how long it runs to
determine any distinct patterns, whether if it occurs only during certain
processes or programs.
Your computer's CPU generates a large amount of heat while
in operation, so programs that require large amounts of CPU usage may trigger
the fan more often.
Watch for additional signs of overheating, such as sudden
shutdowns or computer crashes. Check inside the case for signs of other
components touching the fan and causing vibration noise.
Do not overtax the CPU by opening numerous
processor-intensive programs at once.
Check that all screws, cards and wires are securely fastened
and away from the fan.
Keep your computer clean inside and out, to prevent the
build-up of dirt on the fan blades or air vents and minimize the threat of
Apply a drop of oil to your fan's shaft to give it proper lubrication
and smooth, quiet rotation of the blades.