I have had my HP laptop for about 4 months, and since yesterday the fan has been very quiet (except for when it's running fast, in which case it just made a normal whirring sound). Today I was on Skype for around 2 hours having a videochat (using the microphone and webcam) with my sister. The problem started after I showed her the room and had my laptop extended above my head (facing down). I then rested it very briefly on its side, at which point the fan suddenly became very loud, making a cross between a rattling and a buzzing sound.
Did I bump the fan somehow? I've been pretty gentle with my computer, but that's not to say it hasn't been bumped around a few times before. I don't understand why the problem started so suddenly!
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Re: Rattling Fan Noise
Unfortunately, even though the laptop is only 4 mths. old, sounds like the bearings in the fan are going out. I would have it replaced. If the fan fails, your processor will overheat and that could be problematic.
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You need to clean the fan blades to stop it. Due to blades getting covered by dirt your fan cannot throw out the heat. thus it runs more fast and makes noise. also the heat sink gets covered by dirt unable to radiate heat . thus your laptop gets heated fast. clean those dirt and the problem will be solved. thanks.
This is just a consequence of normal wear & tear, most Laptops, & Desktop's Fan's actually sound louder over time as the bearing in the fan wears, this causes more noise, it is not too much to worry about. I guess you could replace your fan, but it would mean disassembly of the unit. Get a program called Speedfan, with this you can control your fan, this may help. link below.
Fans are typically a little noisey. If it's exceptionally loud or continues for a long time it may indicate the fan is no providing the proper cooling. Purchase a laptop cooling pad to place under the laptop while your useing it and make sure nothing is interfering with the airflow around the unit.
Not sure of a user cause for the fan to run full speed, unless you are using the laptop in a high heat environment, or setting it on a bed or other area where it is not getting adequet cooling air. If it does it right away, when you turn it on , cold, then there might be a laptop hardware problem. If you leave your laptop on all the time, then you might be inducing the problem. I had a HP high performance laptop, that the fans would not turn on at all till it ran an hour or so, then they would stay on loud for 10 or 15 minutes, then shut off, then cycle.
First, if you just purchased the unit, you should have the problem fixed by HP under warranty.
HP offers a extended 1 year from the date of purchase. Thats 2 years on startup problems.
You are correct on the noise comming from the fan.
This will not go away and may get worse.
If the fan slows down or stops when needed, the CPU will go for a walk.
Email HP customer care and log your problem.
Make sure you have reg. your unit first.
well theres more than one fan on the inside of your computer, so its possible it could be dusty and its setting the fan off balance. its also possible you have a defective fan inside and this sounds like a hardware issue, its possible theres a service enhancement on this model so i would call tech support to see if it can be sent in for repair, i know its not what anyone wants to hear but i do not suggest opening it yourself as it can be hazardous (i.e you get electrocuted)
Note: this could also be cause by overheating or being dropped (theres numerous other things but those sound like the most likely alternatives)