Yellow light with no display

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Dell OptiPlex 780 Small Form Factor

Released in 2009, the Dell OptiPlex 780 Small Form Factor is a mini-desktop computer in Dell's OptiPlex 780 lineup. Identified by the model number DCCY1F.

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Raheel Irshad @raheelirshad

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投稿日: 2025年11月1日

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Yellow light with no display

My pc is only showing yellow light with no display and chek the hard drive and ram both are working also chek the supply it is fine. But only show yellow light not showing anything. Kindly tell me if you know about

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@raheelirshad just to verify, your computer is a Dell OptiPlex 780 Small Form Factor. What light is the yellow light that is showing? Are you referring to the power light? How did you determine all of this "chek the hard drive and ram both are working also chek the supply it is fine"? How did you check that?

oldturkey03 さんによる2025年11月1日

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@raheelirshad just to verify, your computer is a Dell OptiPlex 780 Small Form Factor. What light is the yellow light that is showing? Are you referring to the power light? How did you determine all of this "chek the hard drive and ram both are working also chek the supply it is fine"? How did you check that? — oldturkey03