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!!!
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.
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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.
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!