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

20 Questions View all

Power problems on Dell 755

My power supply "blew up" so I went onto eBay and got another, have fitted this one and the computer ran fine for 2 days but now it refuses to start, all I've got is a blinking amber light on the front and the monitor saying it's in Power Save Mode

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2 Answers

Hey!

Do you see any diagnostic-LED on the front of your Optiplex? I mean the numbers 1-2-3-4. And does it show any reaction after you tried to turn it on?

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No diagnostic lights on front. Turn it on & power button flashes amber

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There's no diagnostic lights On front. Turn it on power button flashes amber

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Does it flashes in the same interval or are there any pauses between?

If there is no interval try the follwing:

- Open the system

- Remove the PSU cable from the motherboard

- Remove the CMOS battery

Then please wait about one minute, plug all in again and try to turn it on.

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Is the PSU cable the big white block going into the green board? Forgive my ignorance. If so I've tried that and no change

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