The laptop makes weird rotating noise. The noise either starts as soon as the laptop turned on or it start intermittently.

Possible cause:

1. DVD drive failure.
2. Cooling fan failure.
3. Hard drive failure.

Possible troubleshooting steps and repair solution:

There are only three parts inside the laptop able to make weird rotating noise.

1. If the noise starts when you are playing a CD or DVD disc, most likely it’s related to the optical drive failure. Test the optical drive with different CD and DVD discs. If the laptop make nosie with all discs, replace the optical drive.

2. Take a look inside the fan grill on the bottom. If the noise appears when the fan starts spinning, most likley you have a faulty cooling fan. Replace the fan.

3. The last part able to create weird rotating noise is the hard drive. If the laptop freezes while making noise, it’s possible that you have a failing hard drive. In this case back up all persoanl data ASAP because the hard drive can fail any moment. Do not store any important data on a noisy hard drive.

The laptop cooling fan makes rattling noise. The noise comes and goes.

Possible cause:

1. Something stuck inside the fan.
2. Fan failure.

Possible troubleshooting steps and repair solution:

First of all, make sure it’s not the hard drive noise. In some cases a faulty hard drive can makes noises very similar to a faulty cooling fan.

Take a look inside the cooling fan under a bright light. It’s possible that something got stuck inside the fan and prevents it from spinning freely. You can remove a stuck object with needle nose pliers.

Try cleaning the fan with compressed air.

If there is no stuck object inside the fan, most likely the fan has a failed bearing and has to be replaced. Replace the cooling fan if needed.

The laptop gets very hot. The bottom part of the laptop, keyboard and palm rest feel uncomfortably hot.

Possible cause:

1. Heat sink clogged with dust and laptop overheats.
2. Cooling fan failure.

Possible troubleshooting steps and repair solution:

Most likley your laptop gets very hot because the heat sink is clogged with dust and because of that the laptop overheats. You can fix the problem by cleaning the heat sink.

Buy a can of comressed air or find an aircompressore. Spray air inside the fan grill on the bottom of the laptop untill all dust is gone. Test the laptop.

Also, this problem could be related to the fan failure. Turn on the laptop and take a look iniside the fan grill on the bottom. Can you see the fan spinning? Will it start when the bottom of the laptop feels really hot? If not, probably you have a faulty fan. Try replacing the fan.

The laptop cooling fan runs all the time. It was turning on and off before but now it runs constantly.

Possible cause:

The heatsink is clogged with dust.

Possible troubleshooting steps and repair solution:

Most likely the cooling fan runs all the time because the heatsink is clogged with dust and has to be cleaned.

A dust buildup inside the heat sink stops normal air flow and because of that the CPU runs hot all the time. The extensive heat triggers thermal sensors and the cooling fan starts running.

Because of the dust buildup the CPU temperature is always above the norm, and as a result, the cooling fan runs all the time.

Most likely you can fix the problem by cleaning the heat sink.

The laptop works fine for a while but after some time shuts down on its own without any warning. After you restart the laptop it works fine but lately shuts down again. When you touch the bottom of the laptop, it feels hot.

Possible cause:

The problem related to overheating.
1. The cooling system is clogged with dust.
2. Cooling fan failure.

Possible troubleshooting steps and repair solution:

If the laptop shuts down on its own without any warning and the bottom of the laptop feels hot, most likely it happens because of overheating.

1. Try cleaning the cooling system – heatsink and cooling fan. Take a look inside the heat sink and if it’s clogged with dust, blow off the heat sink with compressed air.

2. Make sure the cooling fan is spinning. If the fan doesn’t spin when the laptop is hot, it’s possible the fan has failed and has to be replaced. Replace the fan with a new one.

3. Check thermal grease between the processor and heat sink. If thermal grease dried out, you have to clean the processor from the old grease and apply a thin layer of new thermal grease.

Always use your laptop of a flat surface. Make sure there is some space between the bottom of the laptop and the surface. In most the cooling system air intakes are located on the bottom. If you close them, the laptop will overheat and shut down.