My display all of a sudden appears bright what might be the cause i have attached the screenshot of it....
[img http://img155.imageshack.us/img155/7898/brightlf1.jpg]
I have reinstalled the drivers too... but still...

Have you tried adjusting the video card display settings
or the settings on the front of the monitor ?

My mistake... that screenshot shows the normal display only..... actually the way it looked was different... anyway i solved it... played with the drivers it was back to normal again....

Check with your hardware vendor for any BIOS updates. Disable BIOS memory options such as caching or shadowing. If you need to use Safe Mode to remove or disable components, restart your computer, press F8 to select Advanced startup Options, and then select Safe Mode.

Check to be sure you have adequate disk space. If a driver is identified in the Stop message, disable the driver or check with the manufacturer for driver updates. Try changing video adapters.