My optiplex 980 desktop failed after a reboot. It displays the errorcode 1 3 4. No display, no keyboard initialization,,,. whats is going on with this?.
1-3-4/blue isn't a documented error code, but you probably already know that...
I'd suspect a RAM issue because 3,4 = memory failure, and 1 = no memory detected. You can try this:
If that doesn't help:
Then swap all modules into slot 1 to see if you can identify a bum module:
Forum Member since 2004 I am not a Dell employee