thanks.Yes the display comes up well, the system works properly the usb doesn't work.I'v tried using external mouse but nothing seems to work with the USB.Some other time the mouse pad will suddenly work.If I restart it wont work again.For the past two week now it hasnt work.
Ouch! this is not good. I recommend trying to perform a system repair, booting it up with an installation disk and choose repair from the menu. If this does not work, try backing up your personal data and perform a clean re-install.