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Possible Duplicate:
Secondary monitor does not display native resolution

I use an on-board GPU on my computer (GForce 420 GT) with 2 screens, one is connected via DVI and the other VGA. For the past 2 years the screen resolution on those screens was 1920x1080 (which was the their native resolution). Last week I updated the Nvidia driver to 310.90 (latest) since then the Nvidia control panel decided that the native resolution on the VGA connected screen is 1793x1080, not only that but when I choose this resolution the screen goes blank, if I choose a lower resolution the screen is shown but everything is blurry, what to do?

I already tried re-installing the driver and also roll-back

I use win7 pro 32bit

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marked as duplicate by Oliver Salzburg Jan 10 '13 at 12:31

This question was marked as an exact duplicate of an existing question.

First of all, +1 for a good clear question. Now, what does roll back mean, driver roll back or system restore :)? – Dave Jan 10 '13 at 11:53
roll-back means driver roll-back in the device manager, I can't system restore – Roey Nissim Jan 10 '13 at 11:57
Can you please confirm why not, I assume it hasn't been set up or do you mean it didn't succeed? – Dave Jan 10 '13 at 11:58
What happens when you set the resolution in the normal Windows dialog? Why does the nVidia control panel have to get involved? – Jan 10 '13 at 12:14 In the windows dialog the 1920x1080 disappeared the best one was 1793x1080 and like i said when i choose that the screen goes blank – Roey Nissim Jan 10 '13 at 12:16

I have had graphic card issues, rolling drivers back etc has not always helped.

I suggest a system restore (to a point before you made the update last week!).

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That was my first thought also but I cant system restore since the Nvidia update didn't set a restore point (I don't know why) and the last system restore is like from 2 months ago – Roey Nissim Jan 10 '13 at 12:00
And can I assume that rolling back that far is undesirable? If it helps, I've rolled back much further and other than performing another Windows update, there was no negativity for me. – Dave Jan 10 '13 at 12:01
If that will be my last option or if you can guarantee me that that will work, I'll do it. basically what I'm doing here is exploring my options if you guys will tell my system restore is the last and only so system restore it, but we're better then that aren't we? – Roey Nissim Jan 10 '13 at 12:03
It's the world of IT, nothing is guaranteed! However, the only other option I can think of is, finding an old driver and installing it, or contacting NVidea direct. Some one else may have an idea, but if it were me, I'd do it. The problem of a roll back is, of course, it doesn't get to the route of why! – Dave Jan 10 '13 at 12:04
of course nothing is guaranteed! I only added it has a joke anyway I tried Nvidia support forum no one answered other then that like I said I'm exploring my options before system restore. btw i rather system restore then to install an old driver on top of the new one – Roey Nissim Jan 10 '13 at 12:08

Create a custom resolution in nVidia control panel under 'Change Resolution' for the display on the VGA output and use that. That should work.

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I tried to create a custom resolution and the reaction was very strange it was like it tried to show the custom resolution 1920x1080 on top of the old resolution say 1680x1050. I know it sounds odd but basically what I got is a smaller blurry screen. – Roey Nissim Jan 10 '13 at 12:14
So, 1680x1050 with a black border basically? Did you try setting the scaling to Full Screen instead of aspect ratio under 'Adjust desktop size and position'? Also, restart your machine once you have changed to the custom resolution. I've had a PC in the past that would not display properly after a resolution change til a restart. – Simkill Jan 10 '13 at 12:22
OK changing the scale to full screen did make the screen bigger but it still blurry and i don't think its 1920x1080 all we did is magnify 1680x1050 – Roey Nissim Jan 10 '13 at 12:29
What's the model of your monitor? – Simkill Jan 10 '13 at 12:33

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