Question about HP Compaq 6720s Notebook

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The fan runs constantly and gets really hot.

I opened the laptop and cleaned away all the dust. Fan does not cycle just runs constantly

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  • 128 Answers

You may be running too many programs in the background which can heat up a processor pretty well. You may also have a virus which overtaxes a processor. Also, always make sure that the heat vent in the back of the pc is well vented and not obstructed, and NEVER have the pc placed on something like a bed, blanket, or pillow
OK, Do this;
These are the steps that you need to take, and the instructions on how to do it:
1. Reboot into Safemode
2. Run a virus and spyware scanner while in safemode
3. Defrag
4. Scandisk
5. Registry error repairing while in safemode
6.Reboot into regular mode windows

Here is how to do it:
Reboot yor machine while holding the F8 key right as it boots back up. A menu will apear. Choose -->"start windows in safe mode with networking".
Windows will start in safe mode. Run an AVG virus scan, then run Defrag by exploring your computer, right click on C: drive, click PROPERTIES, then the TOOLS tab, click the "check now" button, and only checkmark the top box 'fix file system errors', then click ok, the computer will then tell you it will scan upon next reboot., Now click the DEFRAG NOW button. the choose defrag. After Defrag runs for about an hour and it is finished, restart the system. If is still won't run normally, go back into Safemode buy pressing F8 on reboot, then run a registry fixing program such as uniblue registrybooster, then reboot again. If it still won't run right, you may want to reinstall Windows and see if that works. If reinstalling windows doesn't fix it, it may be a hardware problem.
PRINT THESE INSTRUCTIONS AND KEEP A COPY NEAR YOUR SYSTEM FOR FUTURE PROBLEMS. THIS SERIES OF STEPS CAN FIX MANY PROBLEMS
Good luck.
James.
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Posted on Apr 26, 2010

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Posted on Jan 02, 2017

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Fan runs alot and the laptop over heats and shuts down


hello

keep your notebook well ventilated (there are vent grills at bottom that ned to be kept ditanced from the notebook to the flat hard surface where you place the notebook. Also, try to clean the fan , by removing bottom cover : use air can to blow away dust - clean the fan. If the system has never been cleaned before, i can assure you there is mounds of duct inside , especially on the fins of the heatsink fan that cools your CPU and video card. I would also suggest getting air compressor to blow away the dust , if there is too much of it inside. YOU MAY HAVE TO REPLACE THE FAN unit . You can otherwise , go to teh BIOS set up nad reduce the fan speed.

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The fan seems to be running hard and loud. i have cleaned the system and it's running quieter since then. is that normal for the system to do?


I'm assuming that when you say you cleaned the system that you mean you removed programs, old files, viruses, etc.
If your computer is set to change fan speed based on how hot the processor or video card gets, which it probably is, then more programs and stuff running on the computer would cause your hardware to work harder, get hotter, and need more ventilation. Thus faster fan speed.
However, I believe what really happened is that dust collected on the fan(s), causing them to make some new noises and then the dust fell off because it was so heavy or it got sucked through the fan and out of the way finally. Which means it was a coincidence.
Now if you meant that you literally cleaned the computer (opened it up and blew all the "dust bunnys" out) then yeah it makes perfect sense that it would be come quiter.
By the way, if you have not opened the computer case and cleaned out all of the dust, you really really should.
Disconnect the computer from the outlet, open up the case, and using a can of compressed air (about $5) blow out all of the dust, hair, and dirt to make sure your hardware stays in good condition.

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I recently had a new power supply installed in my compaq presario SR1318NX, now the fans run almost constantly. The air from the fans does not feel hot, nor does the tower. Is this serious?


Hi,

In a desktop computer the fan is supposed to run constantly otherwise the processor would get that hot the system would repeatedly shut down or even damage the processor or motherboard.

If the fan is noisy then chances are that the fan blades need cleaning of dust.

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