Unable to save display settings and Multiple Monitors

Have Windows 7 RTM installed on my laptop and was working great with extending to my monitor. I took my laptop home and hooked it up to my tv and it was fine. Now when I bring it back to work I cannot get the monitor to work. Only the display on the laptop is working. Windows can detect the monitor, but I try to enable the monitor and when I select Apply I get an error message "Unable to save display settings". I am a local administrator on the laptop. How can I extend to my monitor!
Thanks

Hi,
Error message " Unable to save display settings" mainly indicates that you try to extend or duplicate the desktop to the two external monitors in addition to the laptop screen. Generally, laptop supports only two displays at one time due to hardware limitation. I
suspect that the issue occurs because the laptop remembers both configuration for your extended monitor and TV. To extend your monitor, you need to clear the multiple configuration for your laptop and then extend your display by changing your display
settings. To do this, please take the following steps:
Step 1. Delete registry key.
==================
1)Press Win + R to open a run box.
2)In the Run box, type regedit, and then click OK.
3)Locate the following registry subkey:
HKEY_CURRENT_USER\Software\Microsoft\MobilePC\TMM
4)Right-click the subkey that you located in step 2. Then, click Delete.
5)When you are prompted to confirm the delete operation, click Yes.
6)On the File menu, click Exit to exit Registry Editor.
7)Log off the computer. Then, log on to the computer.
Step 2. Extend your display by changing display settings.
====================================
1)Open Screen Resolution by clicking the Start button , clicking Control Panel, and then, under Appearance and Personalization, clicking Adjust screen resolution.
2)Click the drop-down list next to Multiple displays, click Extend these displays, and then click OK.
References:
KB 973782
Best Regards
Dale Qiao
This registry key does not exist in my Laptop and it still won't work. I have an Asus N53S
which has both Intel HD Graphics 3000 and an NVidia GeForce GT 540M. It appears that the limitation is actually there is no D-Sub / HDMI / Internal Monitor option like there is in Windows Display.

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Before you begin to read this ( rather ) long post (sorry for that), i will summarize the final question :
Can there be a relationship between freezes and monitor settings in system preferences ? Are there solutions to improve these settings ? what can be done ?
*My experience* :
After last Tiger updates (9 and 10), my Finder (?) froze very often.
In April, for this reason, I made a Tiger "archive and install" installation.
Nothing really improved.
In July, after multiple freezes I uninstalled :
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Many thanks to those who have had the patience to read this and my apologize to those who have the feeling they have lost their time (and also for my approximative English).
*Thank you !*
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Message was edited by: Josy

Thomas Bryant wrote:
Hello! There are a couple of things you can do. One would be to run the Apple Hardware test to see if it comes back with anything. It's probably on one of the install discs if it's not on a separate disk. Second you can open the console (apps>utilities>console) and see if it's throwing a crash log that might help. The monitor and video card resolution could very well be causing the problem which would seem to indicate since a PRAM reset would clear the resolution settings. I think you'll have to find the resolution that works and stick with it. Tom
Hello!
For the AHT unfortunately impossible now with a dead Superdrive ... I had done it quite recently (one month) and all appeared to be ok. I'm thinking of buying an external one but don't know if it could help for this i.e: if an install DVD will run on an external drive.
for the console: I don't well understand your "throwing" a crash log ... Is it "deleting" that you mean? Then which one?
Just after writing this post, I read an interesting article by a developer about Tiger and resolution (an hidden feature) which I thought could be in relationship with my problem (I'm not a developer myself but to help localizing somme apps I had to install the DTools). Also saw in a forum a similar problem concerning a "younger" type of G5 monoproc 1.8, and an ATI RADEON card (younger too) and this resolution 1600 x 1200. It seems that several people (all gamers) with this configuration was meeting the same trouble. Sky punishment ??
Well I think I will stick to pram reset then.
Thank you very much for you answer (and your patience !)

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{------------ Please click the "White Kudos" Thumbs Up to say THANKS for helping.
Please click the "Accept As Solution" on my post, if my assistance has solved your issue. ------------V
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