It depends on which type of laptop fan you are asking about. There is a an internal fan inside your laptop which is very small anywhere from two to one-inch in diameter. There are external fans you can buy to place under the laptop to dissipate heat radiating from the shell. These are much larger with more throughput of air.
There is one major purpose of a laptop fan. The purpose of a laptop fan is to keep the temperature of a laptop as low as possible or else the laptop will overheat and be damaged.
You need to place the USB fan cooler beneath your laptop and connect it to one of the ports for it to cool your laptop.
It is upto your choice to have a fan in addition to built in fan.
So the laptop doesn't overheat.
Dell's latest BIOS for your laptop features an improvement which keeps your laptop quieter, longer. They do this by raising the temperature at which your laptop must get to before the fan turns on. It may seem like your fan never turns on, but the truth of the matter is your BIOS is telling your fan not to turn on because it simply is not hot enough yet. Rest assured, when your laptop gets too hot the fan will kick on.
take that fan out and then clean it. ( then put it back in)
Big enought to not be a laptop. As in, you wont want it on your lap.
It is often caused by the cooling fan.
When playing games your laptop has to work very hard. To compensate for the heat generated by your laptop, your fan has to work harder to keep it cool. This is perfectly normal.
The cooling fan will keep the notebook several degree's cooler in order to prevent overheating.
No, this is a processor designed for laptop computers, so the heatsink and fan will have to be specific to your laptop. You can reuse the current equipment.
Yes, laptop fans definitely work. They do a great job of keeping your laptop cool. It can extend its life.