lenovo thinkpad t410 screen inverted
I have a Lenovo thinkpad t410. I installed centos 6.3 - after a few days the screen got inverted. I have tried rebooting, power cycling -- even booting off a ubuntu CD but the screen remains inverted. I have tried alt+ctrl (up arrow) and (down arrow) to no avail.
Its inverted as soon as I boot it up. I even tried to put the install CD but the screen is inverted as soon as I boot up the laptop. The system never seems to come to a login prompt. Tried power cycling.
With the install CD I get the inverted menu but am not able to get a prompt even if I hit "enter" key to the first install question (where it asks for the language).
I tried several power cycles with no avail.