Question about Dell Dimension E521 PC Desktop

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Dimension e521 black screen no video signal

Computer starts, fan is on, aux power light is on (on motherboard), no video signal, removed harddrive and tried on another computer and got a video signal.

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  • vpprod2000 Jan 09, 2009

    When I turn on the computer there are no beeps, although the led on the DVD drive flashes about 12 times. Number lock key doesn't respond.

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  • 158 Answers

If your num lock key responds, you may have to reseat/change the video card (if you are sure monitor is good). else you need to replace your motherboard.
Getback if you need any clarifications

Posted on Jan 09, 2009

  • Prashant Bharadwaj
    Prashant Bharadwaj Jan 09, 2009

    Replace the motherboard. It's gone.

  •  Lynn
    Lynn Dec 18, 2012

    Nahh...replace the power supply, a dead power supply will turn everything on but the screen

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1 Answer

Motherboard aux power light is flashing


If you mean the power button just flashes green but it does not power on then your motherboard might be the issue. Remove any PCI cards like modem, video card, sound card, etc... Remove the memory modules and disconnect cables to CD/DVD drives. In other words just have the power supply and motherboard connected and see if the power light stays solid green. If it does then start re-inserting cards and connecting drives etc (WITH POWER DISCONNECTED) to try and isolate the problem. If not then your motherboard is probably defective and needs to be replaced. Also plug the computer directly into the AC wall outlet.

Nov 16, 2012 | Dell Dimension E521 PC Desktop

1 Answer

I have a Dell Dimension E521. When I cut the power on everything comes on including the monitor, but the monitor will stay black. It does say something about power save hit any button but the screen


A solid green light means the computer is operating normally.

A solid yellow light indicates the power supply is operating normally but the computer is not processing data.

This could mean there is a problem with the CPu or another component on the motherboard.


((A blinking yellow light indicates the power supply is receiving power from the wall, but not functioning properly.
This generally means the power supply itself is bad and should be tested or replaced.))


A blinking green light means the computer is in standby mode.

You should consider visiting Dell Support and downloading the manual for your

your Dell computer. So use the LED power light codes if your Dell computer has them.

hope this helps

Sep 10, 2012 | Dell Dimension E521 PC Desktop

1 Answer

Aux power led light is amber on dimension E521


I think your problem is your memory or video card.

Below are some steps that I recommend.

When you plug in the power cord is there any lights whatsoever on the computer?

When you press the power button do you hear fans running, hard drive spinning, lights on the computer, hear any beeps or lights constantly blinking, hear the DvD/CD drive click and the light on the drawer of the DvD/CD turn on for a second or two? If so the laptop is trying to boot or may have booted, but the screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with the computer and why it is not booting. Most times it's a motherboard issue when you hear beeps or blinking lights continuous. Most times the problem is with the memory or Video Card. Count the Blinking Lights or Beeps and take note of their pattern (1 Long or 1 Long followed by 2 Short).

Maybe your power cord is bad if you don't get anything to happen whatsoever when you press the power button.

Maybe you have a Static Charge Buildup. Remove the Power Cord, then Press and Hold the power button for 30 seconds. After 30 seconds plug the power cord back in and hit the power button to see if it boots.

Maybe your memory is bad or the memory slot is bad.

Remove the Power Cord, Open the Case and remove one of the memory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x on it with an ink pen. If it fails to boot then move the chip to the next memory slot and try rebooting. If it fails take the chip out and set it aside, then put the other chip in and try booting it in both slots. If it boots, just to verify that the chip set aside is bad, mark an x on it and put it into the open memory chip slot and try booting.

Maybe your power supply is bad. Sometimes there is enough power to make the power light or some other lights come on but not enough power to make the fan turn on or hard drive spin.


Below are links and info I found from Dell's Website based on your model.


http://support.dell.com/support/edocs/systems/dime521/en/SM_EN/specs.htm

Controls and Lights Front of computer:

Power button - push button

Power light
green light - Blinking green in sleep state; solid green for power-on state.
amber light - Blinking amber indicates a problem with the power supply inside the computer. If the system cannot boot and there is a solid amber light, this indicates a problem with the system board (see "Power Problems" in your Owner's Manual).

Diagnostic lights
four lights on the front panel (see Diagnostic Lights.)

Standby power light
AUX_PWR_LED on the system board

Hard-drive activity light
green light - When the computer is reading data from or writing data to the hard drive.

LAN indicator light

green light - Solid green indicates that a LAN (local area network) connection is established.


http://support.dell.com/support/edocs/systems/dime521/en/SM_EN/adtshoot.htm#wp1056411

Jun 03, 2012 | Dell Dimension E521 (D10E16) PC Desktop

1 Answer

How can I replace the fan on my Dell Dimension E521 desktop? A few days ago, it started making rattling noises. Yesterday it stopped entirely. I shut down, then turned back on and there was a black...


http://support.dell.com/support/edocs/systems/dime521/en/SM_EN/parts.htm#wp1461049
Once the cooler is out unscrew the fan and go with it to a pc shop and get an similar one - make sure it has the same number of wires.

Aug 19, 2011 | Dell Dimension E521 PC Desktop

1 Answer

Describe your dell dimension E521 wont boot and Problem my computer turns on but doesn't open it goes to a black screen with little flashing bar in top left corner nothing new was installed but there...


The 123 lights on tower translates as:

Routine system activity subsequent to video initialization.
Watch your monitor for on-screen messages.

Disconnect the video cable from the computer and see if you get floating color bars on display. If not, your monitor is defective.

Jan 10, 2011 | Dell Dimension E521 PC Desktop

2 Answers

Booth up the computer


First When you power up the computer press F1 or F2 or del or ALt+F2 to enter in bios.Then make sure harddrive is detected.
If you harddrive is not detected or you can't see any display on screen then open cpu cabinet.
Reattach the RAM memory ,both connection to harddrive .Reconnect processor and it's fan pull cmos cell from motherboard for 10 minutes.Remove pci card or vga card if any then check.Make sure motherboard is not ground with cabinet.
Let me know if you need further assistance.
Thanks for using FixYa.

Jun 05, 2010 | Dell Dimension 3100 PC Desktop

1 Answer

Help! My dell dimension E521 will not boot after


Hi,

Its seems like your RAM is not working properly, so once you replace the this RAM and check it, you problem should be resolve.

Regards

Ashly

Feb 01, 2010 | Dell Dimension E521 PC Desktop

1 Answer

Gibberish + won't finish loading Windows


remove the new memory first. if that does not help you may have some a virus, indicated by safe mode workng fine. One other thing i found would do that is a damaged Hard drive, not to likely here because safe mode works.

Apr 28, 2009 | Dell Dimension E521 PC Desktop

1 Answer

Won't load windows...


you video card is not working.... if you have onboard video use that until you have installed the driver for your add on video card

Apr 16, 2009 | Dell Dimension 3000 PC Desktop

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