Attach an external monitor.  Is there an image on it?

Please, kindly link me up with your Dell Service Center in ABUJA, NIGERIA.

Thanks for your prompt respond

If you have the nVidia video chip, it could be faulty.  See below for the extended warranty information:

http://en.community.dell.com/blogs/direct2dell/archive/2008/08/18/nvidia-gpu-update-dell-to-offer-warranty-enhancement-to-all-affected-customers-worldwide.aspx

No, is not display anything