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Lacie ED Mini externall HDD won't power up when on button is pressed, even though the power supply indicator green light does come on.

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Hi there,

use a different cable connection on the unit. sometimes this problem happen only from a defecive cable connection..

hope this initial info help you.

thanks for using fixya,

Posted on Nov 05, 2008

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When i turn on my Dell Inspiron 2400 Desktop Computer why won`t it start.


Is the computer plugged in to a known good power source with a known good power cord? Also, make sure the power is fully seated on both ends. When you press the power button are you getting any indicator lights? The power button itself has an LED that will be either solid green, blinking green, solid amber, blinking amber, or off. Do you hear any beeps?

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I got dell optiplex 755 desktop computer in the power supply unit at the back there is a small button and a green light what are these for??


It help diagnose problems with your computer

A solid green light means the computer is operating normally.

A solid yellow:- the power is operating fine but your computer not processing data. This could mean there is a problem with the CPU or another component on the motherboard.

A blinking yellow light: 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

Jan 29, 2012 | Dell Optiplex 755 Desktop Desktop Computer...

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I have a Dell PE2900 which is not starting. The (single) power supply has a solid green light when plugged in. When I press the on/off button, it turns green, but nothing happens; no post, no fans, no spin...


This doesnt' look like the motherboard right away. First I would try the unit with another power supply. Using a power supply tester may let you know that the unit can give power or turn on but does nto mean the PSU is able to work with a load.

Many time dell will still have the lights even though the PSU is bad. On the back of the unit when you hit the power button. There should be status messages etc that can tell you if the unit detects issues.

This manual: http://support.dell.com/support/edocs/systems/pe2900/en/hom/html/about.htm#wp1072621

will help you. Pay attention to the Power Indicator Codes and LCD Status Messages sections.

Mar 08, 2011 | PC Desktops

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HP Pavilion a 1020n desktop - green power supply light on back flickers \ pulses when power cord is in place, but system will not respond when the power on button is pressed.


just remove the ATX cable from the motherboard (24 pins connector coming from the power supply),the power cable to the HDD and the and the dvd drive and then connect the power and chekc whether the light stays on or flicker ,if it flickers then the power supply is Bad if not then there is a probelm with the motherboard

Mar 01, 2011 | HP Pavilion a1020n (PS583AA) PC Desktop

1 Answer

Bought new power supply, no difference power button will not even go on or light up ; however small green light on mother board lights up. als accidentaly disconnected the switches wiring to the mother...


The green light just show that the motherboard is getting power.
The power button of the front of the case is connected to the mother board, not to the power supply, usually in the extreme lower left corner along with the with the HDD and Reset Button cords; Power button wire are labeled and usually red/black.
If all wired correctly, possible bad or stuck power button or reset button.
Hope this helps.
Please rate this answer by check rating "Hands"

Feb 08, 2011 | E-Machines T3958 (827103050974) PC Desktop

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My hp pavilion a430n is not turning on. even though i pressed the power button the light wont even turn on. it is truly annoying and the screen says something about the power supply and green, red, blue...


I suggest to open your computer and unplug your power supply and look for the color green and black cord which plugged from your motherboard. Then find a piece of wire and short the color green and black wire to test if your power supply is working and plug to your power socket. And check your electronic parts (capacitor) near at your processor, it might your capacitor blown out.

Nov 15, 2010 | HP Pavilion a430n PC Desktop

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Power light flashs off and on and pc clicks


Most newer models of Dell computers now have a diagnostic LED surrounding the power button on the from of the computer. When you press the power button to boot the PC, the light should be green and remain green under normal circumstances. Any other lights will help you troubleshoot the power issue you are having.
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.


So use the LED power light codes if your Dell computer has them. Also pay attention to any unusual beeps or sounds coming from the computer. Well, I was sure that the voltage selection switch was in the right place. And I found it highly unlikely that the processor power cable would suddenly unseat itself. Ugh.
Then I had an idea. I flipped off the surge protector and then flipped it back on. Tada! No more orange lights. Weird. The moral of the story: try the simple stuff first.

I hope this helps and please dont forget to rate my answer. Thank you! :D

Apr 28, 2010 | Dell OptiPlex SX280 PC Desktop

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Press power button amber light flash for about 2 minutes green light come on boot up then shut down hit the button again it boots up


The blinking Amber light most often indicates a problem with the power supply. In rare occasions it can also be an issue with the motherboard as well. If you PC is still under warranty call Dell as soon as possible to have this addressed.

If it is out of warranty, it depends on your experience and aptitude on working on PCs. It is possible to order a power supply and replace it yourself. Look at other vendors first before buying one from Dell as you can often get one for much less money. Replacing them is not too difficult, though you would be taking a gamble that it is not a motherboard is not bad (though odds are in your favor).

Good luck,
-Tor
Dell Certified Technician

Nov 28, 2009 | Dell Dimension E510 Dual Core 2.8 Ghz...

1 Answer

Blinking Green power light


Unplug the power cable and press and hold the power button for several seconds to discharge the system. Then allow several minutes before reconnecting the power cable. If the problem still persists, it may be a failed power supply.

Nov 20, 2008 | PC Desktops

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