XPS 420 Diagnostic Lights Tags: CPUs XPS Light Last response: February 20, 2010 3:26 PM in CPUs Share guan8810 February 18, 2010 12:11:50 AM I have a 134 diagnostic light on my XPS 420. What should I do? More about : xps 420 diagnostic lights cjl a b à CPUs February 18, 2010 1:23:26 AM Did you change anything between the last time that it was working and now? That sequence isn't on the official diagnostic list, so it isn't that helpful unless I find a more detailed XPS 420 diagnostic manual than this: http://support.dell.com/support/edocs/systems/xps420/en... guan8810 February 20, 2010 3:26:41 PM It was the graphic card issue. Motherboard ok. Thanks Can't find your answer ? Ask ! Publish Related resources: ForumDiagnostic light in Dell xps 420 ForumDiagnostic light in Dell xps 420 ForumDell XPS 420 problems ForumMy Dell XPS 420 cannot find windows ForumDell XPS 600 diagnostic lights 123 ForumXPS Gen 5 diagnostic lights ..?? ForumXps gen 4all diagnostic lights green but not booting up ForumDell XPS 400 wont boot blinking amber power light and diagnostic light 1 only ForumXps 600 diagnostic lights 4, flashing amber Forumdiagnostic lights ForumDell XPS Possible Faulty GPU? ForumDell XPS 420 Won't Boot (Replaced P/S & Motherboard) ForumXps420 boots only from main plug Forum6300 fx vishera black edition ForumDiagnostic light in Dell xps 420 Forum[Solved] Intel i5 or i7 processor on Dell Studio XPS 8100/9000? ForumVideo card upgrade on Dell XPS 400 system ForumDell XPS Gen 2 ForumCan you overclock a Dell Studio XPS 435T ForumHow to turn led lights off of computer fans More resources Read discussions in other CPUs categories AMD Intel Intel i5 Intel i7 Phenom Cooling Performance !