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The OptiPlex 755 is an energy-efficient desktop computer designed for businesses. It was released in mid 2007.

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Broken Power Button on Dell 755?

power button not working on dell 755?

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Power Button Not Responding on dell 755


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What colour is the Power button light showing?

Here’s a a link to the user manual for your model.

Select your particular model variant and then click on the Troubleshooting link and then on the Power Lights link and follow the procedures to find out what may be the problem.

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No or Blank Light.



Did you check the Troubleshooting > Power Lights guide in the manual when there is NO power button light showing?

"If the power light is off, the computer is either turned off or is not receiving power.

¡ Reseat the power cable into both the power connector on the back of the computer and the electrical outlet.

¡ If the computer is plugged into a power strip, ensure that the power strip is plugged into an electrical outlet and that the power strip is turned on.

¡ Bypass power protection devices, power strips, and power extension cables to verify that the computer turns on properly.

¡ Ensure that the electrical outlet is working by testing it with another device, such as a lamp.

¡ Ensure that the main power cable and front panel cable are securely connected to the system board (see the "System Board Components"section for your computer)."


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