How to fix the status led amber "The power-up diagnostics have failed"

A DELL PC OUT OF THE BLUE FAIL? OR BOUGHT IT DEAD?
E510 DESKTOP RELIC FROM THE YEAR.2005
jUST 17 YEARS OLD,
wow it ran every day for 17 year and failed today 2022?????
no monitor told it too has power button and cable.(video)
the power button glows and has green or amber.
and can flash.
I'm reading your free manual now on line
it tells you
"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" on page 40)."

FANS DEAD, CPU AND PSU, IS POWER FAILURE
IT FAILS DEAD COLD< OR ONLY HOT RUNNING LONG TIME.?
my guess you meant dead code power on.

first off the COIN cell battery is dead now.
no PC runs right with that dead. ever.
is 1st thing to do.
below 2.9vdc it fails. no coin lasted 17 years NOT ONE
and can NOT Be ignored
sold in exit lane 15 walmart. CR2032.

dell has the worderful 4 bit binary diagnostic LED bank\
that has code for all POST errors, nice , no? page 47.

https://downloads.dell.com/manuals/all-products/esuprt_desktop/esuprt_dimension_desktops/dimension-5150x_owner%27s%20manual_en-us.pdf



manual was first google hit.
amazing no:?

getnet,
What do the diagnostic led lights show. The diagnostic LEDs are located on the front of the chassis next to the power button. These diagnostic LEDs are only active and visible during the POST process. Once the operating system starts to load, they turn off and are no longer visible. Below is the manual that provides information on what the led pattern shows to help resolve the issue.
Optiplex 780 manual
http://dell.to/1HqoNmD
Thank You,
Dell-Jesse L
Dell Social Media and Communities

1) Switch the system on. Can you tell me if the power button is flashing amber or a solid amber? Please also tell me if you notice any diagnostics LEDs staying lit - these are labelled 1,2,3 and 4 and are near the front headphone sockets
2) Please remove all peripherals at the back of the system and switch the system on. Does this affect the power button LED or diagnostic LEDs
3) Have you added any components to the system e.g. video cards, sound cards etc...
4) Please open the system and remove the following components:
a) Power and data cables from hard drives and optical drivesb) Any PCI/PCI-Express expansion cardsc) All memory from the systemd) The system fan
5) With the above removed, please reconnect the power cord to the back of the system and switch the system on. Please make a note of what happens with the power button LED and the diagnostic LEDs
6) If there are no changes to the power button LED or diagnostic LEDs, please remove the power cord from the back of the system and remove the following components:
a) I/O panel cableb) CMOS battery
7) With the I/O panel cable and CMOS battery removed, please connect the power cord to the back of the system. The system should automatically try to switch on. Do you hear any beeps from the system? If so, can you tell us exactly what you hear?
If you need any assistance with removing these components, please see the User Manual here: http://support.euro.dell.com/support/edocs/systems/op380/en/index.htm
Please keep us updated on how you get on!

Green for full duplex, amber for half or error and red for down

http://support.dell.com/support/edocs/systems/dim2400/en/sm_en/advtshoo.htm#1105412
Since that isn't one of the listed codes, it is important to see what the POWER LED indicates.
If it is Flashing Amber, most likely a bad power supply
If power LED is solid amber, then either the motherboard, or a expansion card in the motherboard has failed. Remove any expansion cards, (Modem, sound or video card) try booting again.
If no Change then a motherboard

British only say dodgy. so bingo for UK?
reckon is only said by us confederates, rebels.lol well the Arris (SB5101U) moldem is first , its LED happy./

SOUNDS LIKE IT IS BAD DO ME, IF MODEM WORKS
AND ROUTER FAILS THEN ROUTERS IS BAD.
But any router made can be not configured at all.
as in hard reset and fails. so reDO alo that. in the Airport router
AirPort extreme
Apple AirPort Extreme 802.11ac User Manual lets read some pages router
wan jack wired to wan jack on modem, check
the AP status LED light
off means no power.
sold amber means AP is process of starting up;.


SOLD GREEN LED: is good
Flashing Amber (orange/) means.
Your AirPort Extreme can't establish a connection to the network or the Internet,
or is encountering a problem. Use AirPort Utility to get information about what
might cause the status light to flash amber. See "If Your AirPort Extreme Status
Light Flashes Amber" on page 18.

the error above amber blink means the AP can not connect to the ARRIS MODEM. so reset it first. reset it by only unpluging AC power from wall for 5min and put back and wait 15min or until modem shows fully connected, to ISP./
the router is last not first. ISP not down today.
if the modem keeps failing call the ISP..
one can wire connect a PC directly tot the modem and test that way
but I will show a page on that now.

https://red-dot-geek.com/connect-pc-modem-ethernet-cable/


now you learned how to test the modem first and then router.
wired
once wired works both modem and router
we play WIFI H3LL all day long, ask. can do but endless causes to fail, in truth.

Steady amber power LED is indicative of a problem with the motherboard. Remove all external connections except power, remove all PCI Cards, ram, disconnect power from all drives, turn on see if power LED is still steady amber. If it is, more than likely the motherboard has a failure. Also check to see if the CPU heatsink is firmly seated (The plastic retainer has been known to fail causing the CPU to overheat)

The UDS has the following LEDs, which help you diagnose problems.
Power LED (green)
Ethernet 10/100 Link (yellow = 10 Mb/green = 100 Mb)
Ethernet Half/Full Duplex Activity (yellow = Half Duplex/green = Full Duplex)
Diagnostic (red)
Status (green)
Simultaneously lit Diagnostic (red) and Status (green) LEDs mean something is
wrong. If the Diagnostic LED is lit or blinking, count the number of times the Status
LED blinks between its pauses. The following table explains the LED functions:

Try removing the power cable and battery, while these are removed press and hold the power button on the laptop for 30 seconds. this is called a hard reset, what it does is drains any residual power in the laptop. if this does not work, that means there is an issue with the motherboard. to have it sent in would cost about $398, give or take.

Beep codes and power LED status are pre-post errors. Usually beep codes indicate a problem with a memory module. Power LED is solid green for normal operation. Solid or blinking Amber color power LED indicates a power distribution problem.




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