Dual Monitor Problem - Only 1 monitor working

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I have recently built a new box with a clean install of Windows 7. Initially I only had 1 monitor and things worked fine. I decided to add a second monitor and that is when the problems started.

When the system boots both monitors display all of the bootup information and and both monitors display the Windows 7 Startup screens. This tells me both monitors and connections are good.

Once Windows loads only monitor 2 has a display on it. Monitor 1 is blank. I have check and both monitors are running the same, and latest drivers. I have gone into windows and it shows two monitors, but I can not get a display on monitor 1.

This is the first time I have had dual monitors so it may very well be a user error, but I am pretty computer literate.

Any guidance would be appreciated.

Please help.

Thanks!

I didn't find the right solution from the Internet.

References www.sevenforums.com/graphic-cards/96697-dual-monitor-problem-only-1-monitor-working.html

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