The noise can only be heard when you play a video or a video game. It’s annoying. so i just disconnected the fan from the motherboard and it’s silent now, but what could go wrong if i leave it like that?
There's a good reason for fans. You need to keep the components cool. Overheating may lead to computer crashes or, more drastic, component failure. In many PCs the fans speed up when the PC is generating more heat - doing demanding tasks, commonly heavy graphics processing such as video editing or some games.
Buying alternative cooling (liquid or quieter fan) is a valid approach but first of all open the case and give everything a good dusting - PC engineers regard using a can of pressurised air to blow the dust away as the best way to do that effectively.
You might also consider the location of the PC - if it's in a tight space that will limit the effectiveness of its cooling as does being close to a heat source like a radiator or even in bright sunlight.
Carol, I agree with Kannon and Dalsan in terms of the danger. The first thing to do is to remove the battery and put it in a safe place. A safe place would ideally be outside the house, in case it should go on fire, but you should protect it from the elemenets. Perhaps put it in a plastic bag, and store in in a metal container if you can get one.
Secondly, assuming the battery came from the laptop's manufacturer, contact them and ask for a remedy! Batteries should not expand, and shouldn't be overcharged - this is a safety issue and ought to be part of the design. It's possible that the company has already issued a recall for your model, but if they haven't, no matter, They will deal with you and what they ought to do is to replace the battery and possibly replace the charger and/or repair the laptop (again, the battery should not be allowed to overcharge, it is a design fault). If they don't respond, contact a consumer group and they will take up the matter on your behalf, but most manufacturers take these matters seriously given their liability for injuries etc.
Great advice, Oron, but you misplaced it.
Yikes - multitasking gone bad! : - )
go for liquid cooling if you like it. for some reasons perhaps your cpu is heating and the fan try to cool it so spinning very fast.
I agree with Bruce, and definitely suggest purchasing a replacement fan with a more silent design. The importance of the fan depends mostly on where it is found, such as on the computer case, CPU, GPU, hard drive, or elsewhere. Overheating can be an issue if it is a case fan and the case does not have proper ventilation or air flow. If it is aCPU or GPU fan, overheating is a huge possibility and permanent damage could occur if overheating persists or is extreme. Case fans are not always necessary, but can help extend the life of your hard drive(s), CPU, GPU, motherboard, and power supply because of less heat stress.
If it is a case fan, the temp inside of the case may end up running higher than normal, but it may not cause any difficulty. If it was your CPU fan, you will most likely suffer thermal damage to your processor. If the noise is that much of an issue for you, you should look into getting another fan that runs quieter. Don't forget the thermal grease either.