Loose wire, or some dust in a connector. Take it apart again, clean it out again and put it together again. Post again if still not working.
SOURCE: Dell Precision Workstation 670
Try different memory modules ( RAM ) and see if it is just the RAM.
Also take anything else out you dont need - including dedicated graphics card assuming it has onboard graphics card ( if so then enable the onboard graphics card before taking out the dedicated one )
If its still the same then yes it is the motherboard in which case you need the motherboard replacing.
If you did the diagnostics that they walk you through and they still tell you its the motherboard then it will be the motherboard as there diagnostic software is accurate.
SOURCE: I have a broken Dell Precision 470 Workstation.
sounds like a motherboard failure.
Basic troubleshooting, disconnect all external connections except power, see if indications change, if no go remove all expansion cards see if any change, if no go disconnect all drives see if any change. If none, then motherboard.
If at any step you get a change in indications, then see if you can isolate the faulty item
DIAG LED info is here
http://www.fixya.com/support/r4282412-find_no_post_diagnostic_information_dell
SOURCE: About Dell precision 450 workstation is Dell
A precision workstation is a high performance desktop system. The 450 is an older model but can still do well as a desktop system
SOURCE: dell precision workstation t7500 won't boot. Showing solid amber.
You may have to reinstall operating system by buying a Dell cd(from amazon) that reinstalls the operating system you had on the workstation.
yes, first check the power, and the memory (i.e. simm)
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it works now thank you
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