Solve : Why my Laptops Screen Turns yellow on battery??? Help?

1.	Solve : Why my Laptops Screen Turns yellow on battery??? Help?
Answer» Guys i am using Dell laptop E5400 for 2-3 YEARS. and Have replaced its LCD once about 1 and a half year ago.. Now on battery Lapptops SCREEN turns pale or you can SAY yellow.... May be its LCD is too old now...But i don't want to change it.. And when CHARGER is pluged in the screen gets a little bit bright but not as MUCH as it shhould be... I am using windows 7 and have already used its brightness settings and have maximized it... Please help me increase screen's brightness to normal... Any help would be appreciated.. Regrads LION ALI

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