Very Loud and Never Stopping Fan

Hi,
I purchased my HP laptop in September 2010 and for the past few months the fan runs constantly and is very loud. Even after shutting down my laptop for hours, upon start up the loud fan begins. It has gotten so loud and distracting that it is now hard to focus and use the laptop.
Any feedback would be appreciated. I remember when buying the laptop something about a year warranty on hardware. Does this exist? This issue needs to be resolved.

Well, the never stopping fan can be due to a number of factors, most usually:
1)      You have a dust build-up in your heat sink (which may not be apparent by just looking through the vents). Unfortunately your computer’s cooling system also acts as a vacuum cleaner to all those table tops it has been on. It is a common nuisance after over a full year of work. Cleaning it up may require disassembling the whole computer, since the heat sink is inaccessible on many computers. (Word of caution: if you are thinking of using “Canned Air” to blow the dust out, be very wary that you may destroy your fan bearings if the canned air makes the fan blades rotate too fast!)
2)      CPU may be under constant load (maybe some new buggy software update was installed?) – Check CPU Load on “Task Manager”.
3)      The GPU (graphics card) may be running always at full speed, thus increasing the heat inside the unit (change GPU profiles to “Battery Optimized” or such).
Finally, do use a program such as “CPUID Hardware Monitor” to read out the temperature sensors inside your computer. You can better understand at which temperature the fan kicks in and why the temperature is rising to that target.

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