laptop VGA problem

Hi guys. been watchin the forum space for a while now. and i now have a problem so thought of joining and posting here.

i have a toshiba p200 pspb6a-ocso4m below is the link.
[url=http://www.pcworld.idg.com.au/index.php/taxid;567450213;pid;5158;pt;1][/url]

what has happened is that the video card s not being recognized and so i can not use the max resolution of 1440x900, nor can i play any games, which i do primarily. the windows device manager sees the display adapter as a standard vga disply adapter, when for the past year it has read "mobility radeon HD2600"

i dont know what is wrong. i have had it for a year now, and it is still under warranty.
and i am getting a service, but just wanted to ask first for quick help.

thanks in advance.

thans for the reply. i solved the problem though. just had to rollback to the 8.4 catalyst drivers and it worked. then updated to 8.11 and it was fine