Question about HP Pavilion a1630n PC Desktop
The Processor fan usually runs full speed, when the Processor is sensed to be overheating. BIOS, (BIOS program), determines if the Processor is past it's thermal limit. This is done by sensing the Negative value of a Ground to the Processor. If the negative value is too low, BIOS turns the Processor off. [Thermal Limit: A Processor is a type of I.C. Integrated Circuit. http://en.wikipedia.org/wiki/CPU Electrons passing through the miniature circuitry within the Processor, make heat as they move. (One Electron actually hits another Electron. This activates the motion of Electrons, that is soon to become Electricity. Electrons hitting each other create Friction. Friction causes heat) A Processor can only run so hot before it burns up. (Literally in some cases. As in....... On Fire) There is a limit set as to how hot the Processor can still function correctly, and what is the maximum safe limit before the Processor's instructions, starting breaking down. This is the Thermal Limit ] As the heat builds up, the Heatsink, and Processor Fan, cool the Processor down. Helps to keep the Processor, well below it's Thermal Limit. [ The Processor's fan can sit on top of the Heatsink, or it can be a front case fan pushing air through a plastic tuned port, to the Heatsink. Your processor fan is sitting on top of a Heatsink. A typical Heatsink/Fan combo, http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3451342&amp;CatId=493 Typical construction of a Heatsink, is a flat plate of metal with tall, thin fins protruding from it. Heat is absorbed by the plate of metal, and the fins absorb the heat from the plate, where it is radiated away. Your Processor fan is sitting on top of a Heatsink, which is sitting on the top of the Processor's case] The top of a Processor's case, and the bottom of a Heatsink, are not perfectly smooth. An in-depth view shows 'Hills, Valleys, and Pits'. These form cavities, or voids, that are filled up with Air. Air is an Insulator, not a Conductor. Thermal paste compound is used to fill these voids, and transfer heat from the top of the Processor's case, to the bottom of the Heatsink. Thermal paste is a Conductor. A typical Processor's thermal limit, is usually pretty warm. Time, after time of heating the Processor up, has also heated the thermal paste. Thermal paste can dry out, and harden due to this. It reduces the thermal properties of the thermal compound, to a useless state. It is an Insulator now, and not a Conductor. Doesn't conduct heat. Age also causes the properties of the thermal paste to break down. I would suggest taking a look at the thermal compound. It's always a good procedure to clean the Processor, and the Heatsink, and install fresh, new thermal paste. Decent thermal paste averages around $6, but a 'Mom and Pop' computer shop may have a one Processor application, for around $2. [Remember to follow Anti-Static Precautions, BEFORE reaching inside your unplugged from power, computer ]
Posted on Aug 30, 2010
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Posted on Jan 02, 2017
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