Sounds like NVidia is to blame
http://forums.nvidia.com/lofiversion...hp?t19904.html
Originally Posted by http://www.codecguide.com
We have seen several reports and questions all over the Internet from people that are having display problems. Symptons include very dark video playback. This problem is not caused by codecs. It is caused by bad nVidia drivers, which configure themselves incorrectly.
If you are experiencing such issues, here are some tips to solve your problems: - Go to your graphics card control panel. Reset all settings to their default values. Important settings are Brightness, Contrast, Saturation and Gamma. You can access the control panel via: Start > Settings > Control Panel > Display > Settings > Advanced.
- Go to your graphics card control panel. Select the "Color Correction" page. Select "All" in the dropdown box called "Apply color changes to:". Then click on the button called "Restore Defaults".
- Go to your graphics card control panel. Open the "video and television" options. (You need to be in the advanced view). Select "adjust video colour settings", then select "correction". Hit "do not use colour temperature correction".
- If resetting the settings does not help, then find an older version of the drivers (for example v84.21). Uninstall your current drivers, reboot, and install the older ones.
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Hope this helps.
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