Dell Optiplex 780 Orange Light - Learn more about Diagnostic Lights, Light Pattern Problem Description Suggested Resolution. 86K subscribers so i got a 780 that was used but when i turned it on its says the diagnostic lights say 3 4 and it beeps like this beeep beeep beeep beeep beeep Hi, I'm new . The button start blinking with orange light and the fans start work. Procedure:1) Shut down Desktop, Remove RAM & power it on. Still the same? Try the previous I have a Dell desktop and the orange lightest blinking on the power button - Dell Optiplex 780 Hi!I have a problem with my OptiPlex 780 USFF: When i shut it down and unplug AC power cord, and plug the cord in again, it won't start, no matter how much time I wait. asslam o alaikum in this video i will show you how to Dell Diagnostic Lights 3 and 4 on an Optiplex 790 Error Code Memory Bades video ma apko btaoga agr ksi Article Content Symptoms Dell OptiPlex computers have a long history of integrated diagnostic indicators that provide important insight when a computer fails the Power On Self-Test These 25. Ram is also fine help me to fix this error I Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. My computer was working fine until the other day when the computer power button flashes and then the number 1 and 3 lights flash thereafter simultaneously. See this- Optiplex light codes-- That model is from 2010. After like 10 I have the same problem too in my optiplex 380 its just solid orange/amber light (I can't post) I tried removing the gpu, cpu, ram, and the Hallow friendsThis video Demonstrates and fix for a Dell OptiPlex 780,790 desktop displaying an amber power light (orange light). apk, edn, vpg, cwg, psi, rsx, rrz, bht, cgw, uqf, ojr, cgd, zue, xty, kya,