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XPS 720 Diagnostic Lights 1,3 and 4
Hi, I hope somebody can offer me some help.
My XPS 720 has been operating faultlessly since I upgraded from XPS 710 ages ago. Last week it started to refuse to boot on first attempt.
When I press the power button, the front panel led's light up, and the computer immediately hangs with diagnostic lights 1, 3 and 4 lit up. This happens before POST or loading operating system. If I then power off and re-start, the computer will boot up normally most times but it occasionally takes two or three restarts to get it going.
There are no beep codes. I have not messed with the BIOS, I am not overclocked, I have not recently installed any new software or hardware.
I can't find any mention of a fault relating to 1, 3 and 4 diagnostic lights in the Owner's Manual.
I have opened ip the case and checked for loose wires etc, but can't find anything wrong.
Is it time for a new computer or can anybody give me a clue to what is going wrong?
Thanks, Don.
europa303
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April 25th, 2009 08:00
Worth a try: Remove and reseat the memory modules, possibly changing positions at the same time.
dead_eyed_don
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April 25th, 2009 10:00
Thanks for the advice europa303.
I should have mentioned before that I have already pulled and replaced all the cards and memory sticks.
I will now try swapping the memory positions and see if it works.
Don.
dead_eyed_don
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April 27th, 2009 06:00
A quick update for anyone interested.
My computer finally gave up the ghost and failed to boot, but this time gave a beep code.
Swapped the memory sticks around and isolated the fault to one stick, so now I'm up and running with half a load of memory. Time to buy some more.
Don.
europa303
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April 27th, 2009 07:00
Thanks for the update and best of luck. I had a feeling this was something to do with memory.