XPS 420 Diagnostic Lights

[guan8810]

I have a 134 diagnostic light on my XPS 420. What should I do?

 

[cjl]

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/OM/HTML/trouble.htm#wp1076480

 

[guan8810]

It was the graphic card issue. Motherboard ok. Thanks