XPS 420 Will not boot up

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XPS 420 Will not boot up

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I have experienced on my XP 420 a problem where PC will not boot.  When I boot the PC, the blue power light comes on, the main fan powers up high, and the 1,3,& 4 diagnostic lights on.  I found the guild on Dell Support to unplug items on the mother board and reconnect to determine the problem persists along with additional steps the Dell Tech Support site suggest.  I complete the tasks and the problem is still persisting.  So, what does this “error” message mean?  A new Motherboard or what?  Help!!!

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  • That combination of diagnostic lights isn't in the manual however, a 1 and a 3 & 4 refer to memory problems.  I would try to follow the procedures for those two errors.  Report back with your findings.  Instructions are HERE.

    Vostro 460 – Intel Core i7 2600 @ 3.4Ghz - 16GB DDR3 @ 1333MHz –Kingston 240GB SSD – Seagate 320GB HDD – ASUS GeForce
    GTX 550 Ti 1GB DDR5 – 16X DVD-RW – 16X DVD-ROM - Antec 550w PSU - Windows 7 Home Premium X64 SP1- Dell E2211H 22"Flat Panel Monitor

  • Thanks the lights are not listed here.  From my further research my issue maybe either 1 o 2 things...either the Motherboard or the Video card.  Beyond that, the documentation that Dell provides is a little sparse.  I follow all the diagnostic guides on Dell Support without any clear direction and/or answers on what is causing my fan to run at high speed, no video on my monitor, and diagnostic lights showing 1,3,&4 and not booting up.  Prior to this issue, I lost video for my built in web cam, so I reboot my machine.  When I did I heard an extremely high pitch noise (like a jet engine starting up) with the symptoms that I described.  Since then the high pitch noise has gone away.  So I am thinking it maybe my video card.  Any thoughts anyone?????

  • At this point it could be just about anything, but with no video on the monitor I would suspect the video card also.  Try reseating the video card to see if that helps.  If possible test in another system to be sure.  Along those lines try a different monitor to make sure it's not the problem.  If it's still not working then I would get another video card.  Good luck.

    Vostro 460 – Intel Core i7 2600 @ 3.4Ghz - 16GB DDR3 @ 1333MHz –Kingston 240GB SSD – Seagate 320GB HDD – ASUS GeForce
    GTX 550 Ti 1GB DDR5 – 16X DVD-RW – 16X DVD-ROM - Antec 550w PSU - Windows 7 Home Premium X64 SP1- Dell E2211H 22"Flat Panel Monitor

  • The lights are odd for the 420- they blink in a certain order and then go off after boot. Can be hard to read. Try the memory solutions in the manual.

  • Thanks J SKTX.  I will give the card a shot. 

  • Mary G  - I will give that a try.  My post is correct, I have a XPS/Dimension 420 I bought back 12/07.  The lights come 1,3&4 with out the anything on the video montior, and my fan running at a high speed.  I have 4 Gigs in the unit, but I check to see if memory issue.   I hoping it is a video...maybe now a memory issue instead of the Motherboard.  Thanks for the suggestion.

  • I have the exact same problem on my xps420.  I bought it in Nov 2007 with the 3 year warranty.  At the beginning of Nov. this year the computer acted the same way as described above:  hi fan speed, lights 1, 3, & 4, no boot up/dell screen.  Because it was under warranty I contacted Dell and they replaced first the motherboard, and then the video card.  It worked fine after that for about 2 weeks.  Then I moved the computer from one room to another and when I turned it on, I got the same exact problems!  And of course now it's out of warranty. 

  • I too have just experianced this issue, i'm within warrenty so as soon as i know the solution (from dell) i'll re-post!