|What do you mean by screen drivers ? Monitor drivers, or Video drivers ?|
You could check to see if there is a newer version of the "drivers" for your video adapter, they might support higher resolutions, but often they don't.
E.g. if you have Intel integrated video, the Intel web site may have a newer version than your brand name or mboard web site does.
If there IS a newer version, un-install the old software in Control Panel - Programs and Features BEFORE you install the newer "drivers" . If you have ATI video, if Catalyst is there in Control Panel - Programs and Features, you should un-install that too. There is often a "master" entry there that un-installs all or almost all of the ATI software in one go.
Try loading the specific drivers for the monitor model. .
If you still can't choose the Optimal or Native resolution , choose a lesser resolution that has the same ratio of width to height, when you divide the width by the height, and switch on Clear Type.
See response 2 and 3 for more info: