Multiple Monitor Issue, business setting

Multiple Monitor Issue, business setting.  Everyone in our office uses laptops (Dell T410) Windows 7 OS with a secondary monitor (Samsung B2240W).  In addition we have docking stations in each conference room with cables which are hardwired to televisions (Panasonic Plasma HDTV 55”) for client meetings.  Up until a few days ago all worked perfectly then out of the blue one colleague’s laptop would not connect to either of the TV’s.  You could see her desktop on her laptop but not the TV.  If you I right click on her desktop and select screen resolution it recognizes the TV but no matter what setting I use (primary/clone/extend) it won’t show on the TV.  I tried in all of the conference rooms with the same result.  However, when I redock her laptop back at her desk, both her laptop display and monitor display work.  I have 5 other colleagues and none of them are having this issue.
mltardifAsked:
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mltardifConnect With a Mentor Author Commented:
Just an FYI for everyone that tried to help.  I figured out the problem.  I had to lower the refresh rate in the display settings.  Once I did that everything worked again.
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ratstudCommented:
try the Fn+F8 key combination on that laptop with the TV connected... otherwise check if there is a seperate profiles set up for docked vs. undocked --- control panel --> system --> hardware tab --> hardware profiles.

otherwise reinstall video card driver.
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mltardifAuthor Commented:
Fn + F8 only brought up track point and touch pad settings, tried Fn + F7 and it borught up the options to extend/clone etc... but when I select clone, nothing shows on the tv.
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discgmanCommented:
Are you able to take the docking station from her desk to the conf room and plug in a tv and test to see if the docking is an issue?
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mltardifAuthor Commented:
Yes but not until tomorrow, I'll try that & see & post my results.  Thanks!
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mltardifAuthor Commented:
I figured it out on my own.
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