Question about HP Pavilion a1630n PC Desktop

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I have a HP a1630n thee monitor says video cable connected?.The processor fan runs full speed all the time,thats all it does!

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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. 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, 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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First thing is make sure when you changed the battery you would need to check the jumper that allows you reset the BIOS and let you use the computer.

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If that problem is happen check the monitor cable if it is correctly plug to the motherboard, if your motherboard have video card attach try to remove the video card, if the same things happen thee problem is the processor, you need to check the processor, remove it and clean then put a thermal paste so that the heat from processor will absorb by the heatsink, and be sure that the heatsink fan it working to prevent the heat.

Good luck !!!


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2) Check if the processor fan is running. If so, remove the processor from its slot and clean the grids of the heat sink and fan, replace the processor and heat sink and turn the PC on.

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2 ghz processor running at 220 mhz


Have you tried right clicking on the desktop (opening Display Properties), clicking on Screen Saver tab, Clicking the Power button, and setting the power schemes to Home/Office Desk? If its set on laptop it will reduce the processor speed when running on battery. I have noticed that even with it plugged in that some times it will run at half processor speed. Try that out.

Have a great day,

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The solution to your problem can be found at this webpage :
It guides you on how to solve overheating problems. Personally I think you need to unseat your processors and refix after cleaning and applying a fresh coat of the Heat Conducting Paste and re-seat it very, very carefully. Gently in the beginning and once u are sure that it has got into its slot smoothly then press harder until u hear two cliks, like a double lock. Fix the Heat sink &see that the retaining clips are snug tight. Try it & post the results........sodeep
Quote "High Temperature Alerts
If Intel Active Monitor or Intel Desktop Utilities alerts you about temperatures above set thresholds, there are a number of steps you can take.

Check for proper airflow:
  • Make sure the processor and chassis fans are running.
  • Check the cabling; make sure cables are not interfering with proper airflow through the chassis.
  • Check that nothing is blocking airflow into and out of the chassis' airflow vents. This is common in direct airflow systems (BTX). Chassis manufacturers may apply a dust filter in front of the CPU fan inlet. Check that the filter is clear and free of dust buildup.
  • Make sure that the air intakes for the external fans are unobstructed and are located at least several inches away from walls and other items.
  • Make sure that the power supply fan is running properly and any other external case fans are running properly.
  • Consider adding another chassis fan.
Other troubleshooting steps:
  • If your PC uses an Intel® Pentium® 4 processor in the LGA775 package, be sure the heatsink is properly installed and 'locked'. Pay particular attention to the proper orientation of the locking pins and give a good push down on the pins (sounds like a double click) to lock them into place. For complete processor and heatsink integration information, refer to Boxed Processor Installation.
  • Verify the chassis/case and power supply are appropriate for the processor model and frequency and the motherboard you are using.
  • Verify the thermal solution for the processor is adequate for the processor and frequency of the processor.
  • Make sure the processor fan cable is connected to the correct fan header (specifically for the processor). Refer to your motherboard documentation for more information.
  • Make sure that the thermal interface material or the thermal grease is applied to the processor properly.
  • Update the system BIOS to the newest version. This will often correct problems with how the system measures temperature.
Fan Control Behavior Changes after BIOS Updates
After updating to the latest BIOS version on certain Intel Desktop Boards, the CPU fan may not go to full speed operation until the processor reaches about 72°C (162°F) and all system fans go to full speed at 75°C (167°F). You may see temperature alerts in Intel Desktop Utilities.
Previously, certain processors' thermal values were not available to the BIOS so the BIOS was unable to perform the appropriate fan control (the fans ran at 100% constantly). With recent BIOS updates, the thermal values are available and the BIOS will run the appropriate fan control. This means the processor may reach temperatures of up to 75°C (167°F) before the fan will go to full speed. The fan control now allows processor temperatures to rise to optimal levels while the slower fan speeds improve acoustics.
Setting Temperature Thresholds in Intel® Active Monitor or Intel® Desktop Utilities
By default, the temperature thresholds in the hardware monitoring software are set as follows: Zone Intel® Active Monitor
Intel® Desktop Utilities (ver. and earlier)
Intel® Desktop Utilities (ver. and later) Processor 75°C
Zone 1, Zone 2, or Motherboard Zone 50°C
If you've checked for proper airflow and performed the other troubleshooting steps listed above and you still consistently receive high temperature alerts in any of the temperature zones:
  • If you are using Intel Active Monitor, you may increase the temperature threshold. You can safely increase the Zone 1, Zone 2 or Motherboard Zone threshold up to 60 Degrees Celsius (140 Degrees Fahrenheit).
  • If you are using Intel Desktop Utilities version or earlier, upgrade the software to the latest version, which sets the zone default thresholds to 65°C.
  • It is not recommended that you increase the Processor Zone threshold.
Downloading these utilities:

Intel Active Monitor
Intel Desktop Utilities".........unquote"

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