Question about Dell Dimension C521 PC Desktop

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Dell Dimension C521 - reseat the power button

Two questions. 1, how to remove the fan from a Dell Dim. C521. 2, how to remove the front cover; same PC.

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I am providing you with the best link because the answer to be very long.Here you can get all the information on hardware for your PC and you can easily fix your problem.So please visit the link to fix your problem.

http://support.dell.com/support/edocs/systems/dimc521/en/sm_en/parts.htm#wp1121008

and there is also a manual from which you can get the information so also I am giving you this link.

http://support.dell.com/support/edocs/systems/dimc521/en/OM_EN/RP333A00.pdf

Please rate me if this solution works for you

Thanks......Have a great time.





Posted on Jul 10, 2010

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Posted on Jan 02, 2017

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Need layout of the C521 motherboard where is the BIOS password reset


Hello Brenda,

Click the link below to download the Dimension C521 Service Manual.

C521 Service Manual Clearing Password Settings
  1. Turn off the computer.
  2. Disconnect any telephone or telecommunication lines from the computer.
  3. Disconnect the computer and all attached devices from their electrical outlets, and then press the power button to ground the system board.


    To guard against electrical shock, always unplug the computer from the electrical outlet before removing the cover.
  4. Remove the computer cover.
  5. Locate the 2-pin password jumper (PSWD) on the system board and attach it to pins 1 and 2 to clear the password.


    When the computer ships from the factory, the jumper plug is attached to pin 1.
  6. Replace the computer cover.
  7. Connect the computer and monitor to electrical outlets and then turn them on.
  8. After the Microsoft Windows desktop appears on the computer, shut it down.
  9. Turn off the monitor and disconnect it from the electrical outlet.
  10. Disconnect the computer power cable from the electrical outlet, then press the power button to ground the system board.
  11. Remove the computer cover.
  12. Locate the 2-pin password jumper (PSWD) on the system board and attach it to pin 1 to re-enable the password feature.
  13. Replace the computer cover.
  14. Connect the computer and devices to electrical outlets and then turn them on.

    Thank You,
    Dell-Jesse L
    Dell Social Media and Communities
    Follow Dell on Twitter @dellcares

Mar 28, 2013 | Dell Dimension C521 PC Desktop

1 Answer

Dell dimension c521, will fire up when 12v 4pin connector not attached but will not go when it is. Any ideas


When you connect the 4-pin connector to that device
(eg. 1. A hard disk, 2. CD/DVD drive, 3. Fan, 4. Accessory ),
It will not fire up or Turn-ON, right?
The device is causing it, probably damaged or defective.

Jun 06, 2012 | Dell Dimension C521 PC Desktop

1 Answer

Dell Dim C521 power button remains orange; doesn't boot


Take a look at this document from Dell. You should have some diag lights on the front of the computer, and this should help you find what is not passing post.

http://support.dell.com/support/edocs/systems/dimc521/en/SM_EN/tshoot.htm#wp1064555

Feb 15, 2012 | Dell Computers & Internet

1 Answer

On powerup of Dell Dimension 5100 running Windows XP the computer hangs with diagnostic lights 1, 2 and 3 a steady green and 4 off. The onscreen message is: 300XT BIOS P.N 113-A33437-102 which appears on a...


try this:

Power the PC off, open the case cover, remove/reseat the video card in the slot.
* Power the PC off
* Disconnect the PC power cord from the rear of the PC
* Remove the computer cover
* Move the RTCRST (Clear CMOS) jumper from pins 1/2 and place it on pins 2/3
* Press the PC power button
* Move the jumper back to pins 1/2
* Remove/reseat the video card in the slot
* Replace the power cord and cover and then power the PC on

Hope it helps

Nov 05, 2010 | Dell Dimension 5100 (D51L1) PC Desktop

1 Answer

My usb ports do not workon my dell dimension c521


1 rollback your drivers, 2 check device manager , Install origional that worked. Also windows updates for hardware drivers.

Apr 25, 2010 | Dell Dimension C521 PC Desktop

2 Answers

I need to remove the fan. I know how to open the case, however I just can't seem to gain access from the metal cover even with all the screw removed.


All WHAT screws removed? You pull back on the Release Lever, then lift the side panel off!

http://support.dell.com/support/edocs/systems/dimc521/en/SM_EN/cvrop.htm#wp1052950

This is in reference to a Dell Dimension C521 Desktop PC, correct?

Here.
This is the Service Manual for the Dell Dimension C512 Desktop PC,

http://support.dell.com/support/edocs/systems/dimc521/en/SM_EN/index.htm

Go down to the heading - Removing and Installing Parts, and left-click on it.

Now click on the heading - Fan Assembly

Anything else I can help you with on this computer?

Jan 21, 2010 | Dell Dimension C521 PC Desktop

1 Answer

I have a dell C521 tower,switch it on but light stays on orange,fans work but it wont switch on.help.


Hi,
if the light remains Orange, Possible In Standby/Sleep/Hibernate Mode.
Try pressing And Holding The power Button For 4-5 seconds Or more.
If this Fails, remove the power Cable, remove side-panel ( Unless Warranted ) locate the silver cmos battery, on the motherboard. remove the battery for 10 seconds, replace and repower and startup. failing this i,d suspect the ram/memory or cpu.

Mike @ Compurepair.

Oct 29, 2009 | Dell Dimension C521 PC Desktop

2 Answers

Dell c521 won't start


- disconnect the hdd and optical drive cables, remove the expansion card, reseat the atx and 12v cable and turn the computer on. if the power led is glowing green connect the devices on by to find what device is causing the no post issue. after the strip down if the power button is still yellow replace the motherboard

Dec 06, 2008 | Dell Dimension C521 PC Desktop

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