Question about Dell OptiPlex 755 Motherboard System Board Socket 775 DR845

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Delll optiplex 755 desktop - motherboard is dr845 13740. Problem with display. When boot up, no graphics on monitor - same as if monitor not connected. monitor checked ok but pc shows no visuals?

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I don't know if you have done anything lately,ie; updates to board, cahnge of cables, etc. but first, try shutting down system, unplug your cable for video, unplug tour tower, plug tower back in and restart. If this doesn't work. You may want to try a system restore back to when you had a picture. Try this and let me know if this worked by adding comment or reply at the end of solution.
Dave

Posted on Mar 13, 2011

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Posted on Jan 02, 2017

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I had dell optiples 755 working fine, one day i


Do you mean your motherboard optiplex 755 not working?
If you mean it, and you have to do troubleshooting and found that the motherboard does not work, it is clear your motherboard problem.If you want to fix it you must change the motherboard to another (new)Your have to make sure that you change the motherboard that can support all the hardware on your computer, especially processor, ide slots, SATA, display card (if using) and ram your.If you choose a motherboard that can support all existing hardware on your computer, your computer should be fully functional.
I hope the tips provided to be helpful,
thank you

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Generally an indication that the Hard Drive isn't detected
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ple.... check the ram & cables..... after boot in system

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