Question about Dell XPS 420 PC Desktop
Remove your memory sticks and wipe them with a soft dry cloth.
reinsert them and try again. if still say same you will have to reload your computer sorry.
hope this helps.
Posted on Apr 25, 2010
My ancient Dimension E320 barfed this way with indicators 3&4 green and a blank screen, and I could neither find any bad memory stick nor get anything to work. Problem turned out to be dirty DIMM sockets on the MB.
I cleaned the sockets by spraying TV contact cleaner into them (after removing and draining power to remove the DIMMs of course) and inserting/fully-seating/unclipping/removing/rinse&repeat DIMMs 5-10 times. Then when I put everything back together it all worked!
(Every spray can of TV Contact Cleaner I've ever seen somes with a red tube taped to the side. One end of that red tube goes into the spray button on the top of the can, and the other end directs all the solvent right into the DIMM slot rather than spraying it all over the inside of the computer. I tried not to make too much of a mess ...but I didn't worry about the inevitable drips.)
Posted on Jan 09, 2012
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Posted on Jan 02, 2017
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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.
Diagnostic Lights CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. To help you troubleshoot a problem, your computer has four lights labeled "1," "2," "3," and "4"on the front or back panel. The lights can be off or green. When the computer starts normally, the patterns or codes on the lights change as the boot process completes. When the computer starts normally, the patterns or codes on the lights change as the boot process completes. If the POST portion of system boot completes successfully, all four lights display solid green. If the computer malfunctions during the POST process, the pattern displayed on the LEDs may help identify where in the process the computer halted.
NOTE: The orientation of the diagnostic lights may vary depending on the system type. The diagnostic lights can appear either vertical or horizontal.
The computer is in a normal "off" condition, or a possible pre-BIOS failure has occurred.
The diagnostic lights are not lit after the computer successfully boots to the operating system.
Plug the computer into a working electrical outlet and press the power button.
A possible BIOS failure has occurred; the computer is in the recovery mode.
Run the BIOS Recovery utility, wait for recovery completion, and then restart the computer.
A possible processor failure has occurred.
Reinstall the processor and restart the computer.
Memory modules are detected, but a memory failure has occurred.
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