Question about Dell 8P779 - System Board Motherboard
Steady amber light on front of Dell demension 4400. No lights are on, on the back. There is a steady green light on, on the motherboard. No fans are spinning.???
Sure hate saying this but your dell 4400 board is the trouble.
Just finished reading a bunch of post. Double check Dell's web site too. No lights lit on the back of the PC means no power & the green led you see on the board is telling you that the board has power.
Seems your not the only person with the same problem as with other 4400 owners.
One user called dell & stated the problem he had, (just like your problem), to the letter. Dell admitted there is a problem with the 4400's. mainboard. Dell does not go out & replace every board. They, like every company wait till someone has this type of problem & contacts the Mfg. Your 4400 was made back in what 2003 - 2004. If Dell still supplies your board the best they'll do is sell you a refurbished board.
I think your better off buying a new board & fitting into your Dell case. You can try to find a board that will run your current componets.
This is dell's web site link for the dell 4400.
Good luck & thanks for coming to FixYa.
Posted on Mar 11, 2008
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Posted on Jan 02, 2017
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Feb 23, 2014 | Genuine Dell Studio XPS 435MT Tower...
For the Optiplex 320, a flashing amber light with no sound indication can mean 3 things.
1) Your power supply has failed
2) Your motherboard failed, most likely from a bad capacitor.
3) The front panel board (where the power button is located) is faulty or not connected properly.
I've worked with 10's of 1000's of Dell Optiplex's over the past 8 years and the flashing amber light is well known as a tell-tail sign of one of those three failure. Always start your trouble shoot with a PSU tester, then inspect the motherboard for domed or split/leaking capacitors...then on to the front panel which would require another panel and ribbon from the same model.
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