This video shows HP EliteBook 8440p disassembling and fan cleaning. The article listed the basic precautions necessary tools to disassemble the laptop, as well as recommendations for disassembly and cleaning.

Two important points here: ONE I haven't done this myself, so can't say how straightforward any of this is TWO You do all of this at your own risk, and please don't even start taking your laptop apart if you aren't sure what you're doing.If you are making the laptop disassembly for the first time in your life, pay attention to this tutorial - First time repairing. I wouldn't remove the heat sink the only objective here is to clean the fan and clear out the airways. Important sections for the cleaning process are 4-1: Preliminary replacement requirements 4-35: Fan and heat sink. Do a web search for file:HP-8440p-maintenance-guide.pdf, and select the top PDF result from one of the hp.com websites, eg. HP has a detailed service manual for the Elitebook 8440p.

(This tells the OS to slow the processor before increasing fan speed.) Click the OK button to save your changes, and then simply close the control panel. Click on the + button next to System Cooling Policy, and change it from Active to Passive. In the little dialog box that appears, scroll down the list to Processor Power Management and click on its + button to open it up. Click the Windows Start button, type power options, and select the Control Panel item of the same name (after a short delay whilst it searches).Ĭlick on Change Plan Settings next to the selected plan, then Change Advanced Power Settings.

This software fix exists in Windows 7 (and probably all other modern OSes), and simply tells the OS to limit how hard it works the processor. Video processing with Microsoft Movie Maker is almost guaranteed to cause this horrible experience, so I need a solution! After a couple of minutes of this, the fans lose the heat-removal battle and the CPU shuts down. Once the CPU starts doing some real work (like video processing or dealing with a runaway Flash plugin) the laptop fans kick in and the whole machine sounds like it's going to take off. The problem has arisen as my laptop has gotten older, and its internal air cooling channels and fans have accumulated dust. It really is a shame that modern CPUs can't do their own power management so that they don't overheat and shut down without warning, but that's the way it goes. Here I present a couple of ways to stop my HP laptop suddenly turning off when it's doing a lot of CPU-intensive work.

Hp elitebook 8440p manual