Mini Displayport to DVI Adapter not sending signal to DVI Monitor

I have a dell monitor connected to my Thunderbolt Display that will not get a signal. The component string looks like this
MBP - Thunderbolt Display- Mini Displayport to DVI adapter- Dell 22" DVI monitor.
I would like to use this monitor as a third monitor instead of collecting dust. Any help would be appreciated.
Thanks,

Hello fuzzymelton,
The article linked below details a number of useful troubleshooting steps that may help get the additional monitor to function.
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/HT1573
Cheers,
Allen

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Message was edited by: thomasw234

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null

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Thanks CellarDwellr.
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Hello!
Mid 2012 MacBook Pro
Processor 2.9 GHz Intel Core i7
Memory 8 GB 1600 MHz DDR3
Graphics Intel HD Graphics 4000
Software OS X 10.9.3 (13D65)
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THANK YOU
I leave the link for the Apple Forum
https://discussions.apple.com/message/18816392#18816392

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Message was edited by: nappy

Just ran in to this myself -- Nehalem Xserve running 10.6.2 Server with an MiniDisplayPort to VGA adapter connected to an Avocent Switchview 1000 KVM. Took the server offline to install RAM and after rebooting, no video. Oddly enough, the KVM's LEDs showed a display connected but Apple System Profiler showed no adapters connected to the video card. Nothing seemingly worked -- rebooting, shutdown/restart, and/or hot-plugging the adapter made no difference. I also tried a second MiniDisplayPort adapter to no avail.
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Mini-Displayport to DVI adapter not working, but Mini-Displayport to VGA and Thunderbolt work fine.
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The new MacBook Pro powers an Apple Thunderbolt display without issue.
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All adapters and components (mini-displayport adapters) are Apple retail adapter.
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Lesson Learned - don't use DVI with older monitors, stay with VGA.
Message was edited by: theocas

Mini Displayport to DVI Adapter not sending signal to DVI Monitor

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