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How do i remove the case on a compaq presario C571 nr? I need to replace the fan assembly

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  • Jeff Strader
    Jeff Strader May 11, 2010

    isnt this a laptop?


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Here is your laptop's manual, with step by step video :

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Posted on Oct 10, 2008

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Cooling fan for a presario cq5621wm dont work

Central Processing Unit chips have a tendency to overheat when used for long periods of time. This is why virtually all desktop processors come installed with cooling systems that include a cooling fan. However, cooling fans are not invincible. They can burn out if they are not cleaned often and properly. To clean the fan in a Compaq Presario desktop, there is some light disassembling involved to gain access to your computer's CPU fan.

Turn off your Presario desktop and disconnect the power cord from its socket. Wait 10 to 15 minutes before you begin disassembling your computer. Attach an electro-static discharge wrist strap to your wrist and attach the wire clip to the outer casing of the desktop. This helps prevent damage to your computer caused by static electricity. Rotate the desktop so the back panel is facing you. Place the desktop on its left side. Remove the two Phillips-head thumb screws from the right side of the computer's back panel. Grasp the molded grip on the side access panel and slide the panel away from the desktop. This will reveal the interior components of your computer. Locate the cooling fan assembly attached to the back panel of your computer. Grasp the power cable extending from the fan, follow the cable to its connector on the motherboard and disconnect it from the motherboard. Locate the locking tabs on either side of the air duct assembly. Insert a small flat-head screwdriver into the notches on each tab and disengage each tab. Remove the air duct once the air duct assembly comes loose. Repeat this procedure in reverse to install the new cooling fan assembly.
This might not be your specific desktop computer it might give some insight into repair or removal

How to Properly Clean Your Desktop Cooling System & Fan

Feb 22, 2013 | Compaq PC Desktops

1 Answer

Hp compaq 610 fan replacement

Case fans ? there are/should-be, 4 screws holding them to the case.

CPU fans ? YOU should not be attempting to remove It. They are part of a Heat-Sink / Fan combination....with the Heat-Sink being attached to the CPU via Thermal-Paste. If you are trying to change the may not be able-to. Some are not designed to be separated from the H/S. You would replace the entire H/S-Fan assembly.


Sep 12, 2012 | HP Compaq 610 T5870 156 WH248UTABA...

1 Answer

I have a Compaq Presario PC, SR5210NX Processor with Intel Celeron Processor 420. I got a message that windows did not start correctly and it said to run the diagnostic, which I did. After that was done,...

Unplug power and Open the computer case. Vacuum all the dust
inside it. Visually inspect all the fans: Power Supply, CPU, Chipset
and Case...Make sure they are spinning easily and freely.
Plug the power in, and turn on your system. Watch the fans, especially
the CPU Fan and the Main Board Fan (System Fan). Oil and dust over
times may accumulate and prevent the fans from spinning properly.
If you are handy, you can remove them, give them a good wash and lubricate
the shafts with a few drops of WD-40, they will be as good as new again.
Fans don't go bad that easily.

Jul 16, 2011 | HP Compaq Presario SR2150NX PC Desktop

1 Answer

Compaq presario desktop sr1503wm fan at rear of cpu box won't turn. can it be fixed or replaced? apparently the other fan is overworking and causing a loud buzzing which goes off and on again every few...

If it is the fan in the power supply, replace the power supply.
The case fan is easily replaced. Measure it (in mm) and purchase a new one. The standard fan is usually 40 mm, I think.

Oct 07, 2010 | HP Compaq Presario SR1503wm PC Desktop

1 Answer

Compaq Presario S5300NX (DM174A#ABA) PC Desktop: Compaq Presario Dekstop: CPU Fan error on bootup. ...

The fan has a third wire, that is used to tell the uProcessor that it is spinning and in some cases how fast.
Replace the fan and that should fix it. Spares form many suppliers on ebay

May 18, 2010 | HP Compaq Presario S5300NX (DM174A#ABA) PC...

3 Answers

Compaq Presario S5000NX

Hi Donna,
I'm not asking you to unplug the CPU's fan while the system is running!
(That would be a bad idea & the system would over-heat for sure).
The fact that you are not able to enter the bios is a major factor & you should have posted this.

So far this is what I do know. Memory was added to the system.
You can not enter the motherboards bios menu. Your old CPU fan was running at 1713Rpm, temp 46C which is, 114.8 Fahrenheit & you cleaned the CPU fan & assembly.
Than remove the heat-sink & fan assembly & applied new thermal grease.
(Guess the video's helped)?
Now tell me. Did the problem - (System restarts), did this start happening shortly after you added new memory onto the motherboard?
This is what I want you to do. Gather up a couple cotton swabs & a bottle of house hold alcohol. Unplug the power cord from the PC. Open your case. There are two memory slots on the board. You said you added memory 2 years ago. Carefully remove the memory from their slots. Look to pages 102-104 in your user manual for instruction on how to remove & install your memory. If you no longer have your user manual you can download it & print it out from this link:
You will also need Adobe PDF reader to view the manual, which can be download for free at Adobe's web site:

Once the memory has been removed take a cotton swab & place a couple drops of alcohol on it.
(Not dripping wet). Wipe the memory’s contacts/ each side both sticks. (Do not touch the contacts with your fingers). Use canned air & blow the memory slots out. If you do not have canned air you can use a powered sweeper with the brush attachment to clean the memory slots out. Than re-insert both DIMMs back into their slots. (Press firmly down while "slightly" rocking the memory left to right as you push down until both locking ends snap onto the memory). Before you close the case, I want you to check every connection in the case. Any one data cable or power cable could be loose.
If in doubt of a solid connection, unplug & re-connect carefully but firmly.
I'm pretty sure your system is not restarting because of the CPU but rather a loose connection or dusty / dirty memory, poor connection & bad or too weak of a battery. Normally I would suggest clearing the cmos/bios jumper on the board but Compaq does not provide the motherboard layout in the user guide. The battery on the board. Is about the size of a quarter. The average battery life is five years. This Compaq was built Aug-2003. One can remove it & check its voltage with a volt meter. It should hold 3volts DC. You can buy a replacement online or ask a friend that owns a volt meter to check the battery. Here is a picture of the battery:

When finished, close the case & plug the power cord in.
That second fan in the system is not connected to the board & that is why there is no speed reading coming up with the software you installed. (This is ok). (Use a small clean paint brush to wipe the fans blades from dust build up, (both sides).
I'll provide Compaq's link for your Presario S5000NX DM171A. (Drivers & software):
Never know when you might need a driver.
Need to buy a battery:

Well this should fix the re-start issue. Take your time.

Post if the problem persist........

Good luck Donna!

Nov 24, 2008 | PC Desktops

1 Answer

How do I remove and replace the Lcd on a Compaq Presario 2100?

disassemble the laptop screen by removing the screws hidden under the rubber pads. dis assemble the case. Simply unplug the old lcd scr and swap. Be carefull not to touch the back of the new lcd. re assemble

Jul 15, 2008 | Compaq PC Desktops

1 Answer

Compaq presario dessktop 5000 series 5330US model#470019-713,Intel Pentium 4

Here is a link which supplys all needed internal parts for you specific computer...

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