I had a similar problem on my zv6000, but I've tracked it down to the fan in the middle (not the one above the CPU with the heatsink).
For anyone else that doesn't feel like taking your laptop apart twice (once to get the part number and twice to put the new fan in after you get it online, etc.), the fan is a Sunon Maglev GC 056015VH-A. HP doesn't carry them in the parts store anymore, but I ordered mine online from an independent retailer.
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A laptop has become a very convenient and mobile way to stay connected with work, to communicate with peers, to research, to take notes and to do just about anything related to computing. However, when the convenient laptop gets noisy, it is an irritation to everyone. The noise maker in a laptop is almost always the fan, and it can be fixed by cleaning or replacing.
1.Unplug the laptop and remove the battery. Of course, you don't want to do this until you have shut down any programs that were open and shut down your computer normally. Be on the lookout for static electricity--don't touch other electrical devices while you are doing this and touch something metallic to discharge any static from your body before toughing the inside of the laptop.
2.Remove the screws that cover the back of the computer. This will differ from laptop to laptop, depending on your make and model. Set the screws aside and lift the cover off. You should be able to see the small square fan that cools your laptop. If you have had your computer running for a while, there may still be some rather hot components, so be careful.
3.Inspect the fan for a buildup of dust. If you can see obvious debris in the way, use a small vacuum hose to **** the dirt out of the area. Be very careful not to get too rough, as the inside of the laptop is fragile.
4.Remove the fan if there is no obvious buildup. This usually means unscrewing it and undoing the wiring. Write down the information on the fan such as the part number and serial number to order a new one. You may find one in your local computer parts store.
5.Install the new fan in the reverse order of how your removed the old fan. Screw everything back together and put the back cover on. Replace the battery pack and plug the laptop in. The new fan should run smoothly and quietly.
If there is nothing hitting the fan blades and the fan makes a grinding noise then the fan bearing is faulty. You may be able to place a drop of oil on the bearing under the label in the center of the fan and if this does not work then you need to replace the fan.
First : Dust is settled in your fan surrounding and the air in/outlets. Cleaning the dust can reduce the noise upto a great extent.
Second : The processor got older and now the fan has to over work to take away the heat, this happens with the aging of the laptop. Some processes and programs may overload your system, so it can also may be a cause.
Try a complete virus scan. Clean the air outlets near the fan. Here are the ways to clean the outlets.
The first easy attempt: Blow hard into the cooling fan air inlets and
outlets. Chances are good that the fan noise decreases immediately.
Second more serious attempt: Open up your laptop (be careful!) by for
instance, depending of model, removing the keyboard usually by removing a
couple of screws on the back of the laptop and maybe some locking
straps on the front. Then remove all dust you can see by for instance
blowing hard on and around the cooling parts mentioned above. Note:
Saliva and laptop electronics is not a good combination so be distinct
but careful. Good luck!
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.
The sound you are hearing is probably the fan, This fan has a noisy bearing and will eventually lock up and the fan will stop spinning and therefore the CPU will overheat and shutdown.
The fan needs to be replaced.
You can squirt a little of that sewing machine oil very sparingly into the centre of the fan. Else you can replace the fan it sounds like something is worn who knows your oil might boost it up to becoming better. It is a hardware problem and nothing to do with your software or firmware.