What do my Dell light codes mean?

Dell OptiPlex 320 with lights: 2, 3, 4 lit up. Power button is solid green. What does this mean? I can't find it online anywhere and am frustrated. :-/
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ITworksAsked:
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Nick RhodeIT DirectorCommented:
2,3,4 are usually a USB failure?  Do you have any usb devices connected?  Like an external hard drive, printer, mouse, keyboard etc?

Unplug them and reboot
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noxchoGlobal Support CoordinatorCommented:
Have a look on this manual: http://www.manualslib.com/manual/36850/Dell-Optiplex-Jk523.html?page=34#manual
There are still pages 35 36 etc.
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noxchoGlobal Support CoordinatorCommented:
Here another manual for Optiplex 320: http://www.manualowl.com/m/Dell/OptiPlex-320/Manual/187317
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noxchoGlobal Support CoordinatorCommented:
And yes, solid green power button means that a pc in a normal operating state.
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Lee W, MVPTechnology and Business Process AdvisorCommented:
Based on MASQ's comment, DISCONNECT all USB devices EXCEPT keyboard and mouse - if possible, connect the keyboard and mouse to different USB ports.
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nobusCommented:
it probably tries to boot from an USB disk...
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Richard SchilkeOnline Marketing and ITCommented:
2.3.4 is def. USB failure all of the above answers are a good start
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