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M4700 with external monitors, why no external video until after booted?

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This M4700 with W7, Dell docking station, older E port plus (about 3 years old) two monitors P2211H with DVI remain off (yellow standby) until after boot into windows, I end up entering the Bit Locker password in the dark sort of speak.   I see now dell splash or per boot options, because no monitors are on. 


Is there a way to fix this, so the system will recognize the external monitors before windows is booted?  Shouldn't it recognize at least one of the two external monitors when booting to the BIOS?

thanks


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