We could really use you both to go into your user CP and provide your fulll system specs, please.
@naresha9 please next time start your own thread as exen though your having resolution problems they still differ form the OP's, nt to mention you've reserected a week old thread.
With yours I would reccomend using the Nvidia mobile modder and modifing the .inf file on your Nvidia 8400M GS NVIDIA MobilityModder Give it a try and post back please it has resolvrf this issu before. Thanks.
@OP We really need your system specs as well, it's difficult to diagnos a problem as it is but without knowing all your hardware it becomes even harder and will help member help you in the fufuture.
If yours is a desktop and your LCD shows up as standard PNP then this most of the time is due to the fact your monitor isn't detected properly and you won't be able to use it's native resolution till the driver or.inf file is installed if one is avalible. Thanks. Fabe