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Disconnected cable from disk drive on my dell dimension c521

Dont know where to connect printer cable.....a blonde moment

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  • Jose Pino May 11, 2010

    What model of drive and what computer model do you have?



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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 dimension c521 won't power up

Disconnect all external connections except power cable and see if the system will power on. If it does, the add back items one at a time till fault is identified. If not here are some items you can check
no post indicators are shown here
if the system has no power indications are all, the replace the power supply 1st as it is the 1st point of failure and the least expensive

Jan 10, 2011 | Dell Dimension C521 PC Desktop

1 Answer

My c521 powers up but will not boot. What can I try to fix the problem? Thanks

Check for internal missing devices and connectivities. check for disk media in the disk drives. The system unit has no hard storage drive.

Dec 21, 2010 | Dell Dimension C521 PC Desktop

1 Answer

I need to restore the factory settings for my Dell Dimension 8770 and I do not have the cd. I do have a D: backup, but dont know how to restore from D drive. Can you help me restore to factory settings? ...

Telephone Dell, but first get the unique Dell asset-tag number from the decal on the back of the desktop. With that number, Dell will ship you a set of "System Restore" CD/DVD disks, via overnight courier.
Use those disks to reinstall Windows.

Sep 15, 2010 | Dell Dimension C521 PC Desktop

1 Answer

No sound

Maybe you forgot to install the audio driver.
Please insert the board driver into cd drive the install the audio driver.

May 22, 2010 | Dell Dimension C521 PC Desktop

1 Answer

Solid amber light with fan running, so i assume the power good signal is being received, no diagnostic lights and no POST. I've disconnected and substituted all the drives with known good parts, bought new...

Please let me know if the numlock light responds by pushing the numlock key on the keyboard. If you are using a videocard, please disconnect it and connect the video cable to the integrated video. Make sure you disconnect all the expansion cards. Please let me know if this doesn't work.

May 20, 2010 | Dell Dimension C521 PC Desktop

1 Answer

How do I restore my Dell Dimension C521? I am

You need the C521 recovery disk, from Dell. Set the BIOS to boot from CD and start the system.

If it gives you the option of "Complete Reinstall" or "Repair", choose Complete Reinstall.

If it does not, or if it does not work - i.e., it always reads the disk and tries to maintain as much data as it can, you need to first wipe out the hard drive; there are many "Disk Wipe" utilities out there. I'd suggest using a boot disk such as DBAN (

May 07, 2010 | Dell Dimension C521 PC Desktop

1 Answer

Diskette Drive Failure for Dimension C521

Most C521's have no floppy, if you have none:
boot to the BIOS, (F2 at boot) go to the drives setting, diskette (May be listed as floppy disk drive) set to NONE, exit and save settings

Apr 10, 2010 | 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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