My screen resolution changed on its own

I change user (Windows Vista Home Edition) when the resolution passes just by himself from 1920 x 1200 to 800 x 600.  1920 x 1200 is my largest resolution available and it has been defined for both users and works beautifully for over a year.  Now, when I go to display settings, I can change to any EXCEPT 1920 x 1200 resolution.  If I select 1920 x 1200, it sets everything to 800 x 600.  Help, please! Thank you.

1 reinstall the video drivers. See the end of this post to find out how to get them.

2. If video drivers reinstall it does not work then probably video hardware is a failure. Exchange on a map of well-known work test.

Never get the drivers from Windows Update. Bring:

1. site of the device mftr. ; OR
2. site of the card mother mftr. If the material is on board; OR
3. website of the OEM manufacturer for your specific machine if you have a PC OEM (HP, Dell, Sony, etc.).

Read the installation instructions on the Web site where you get the drivers.

To find out what hardware is in your computer:

1. read all documentation that you got when you purchased the computer.
2. If the computer is OEM, access the site Web of the OEM for your specific model machine and look at the specs (you'll be there to get the drivers anyway)
3. download, install and run a program of inventory of the free system like Belarc Advisor or System Information for Windows.

http://www.belarc.com/free_download.html - Belarc Advisor
http://www.gtopala.com/ - System Information for Windows

MS - MVP - Elephant Boy computers - don't panic!

Tags: Windows

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