You may have just turned the backlight off. Check your manual to see how to turn it back on. Usually it's a combination of the Function key and one of the F keys, probably the one that has a picture of a monitor on it. If that doesn't work, the light may be blown out.
You may have just turned the backlight off. Check your manual to see how to turn it back on. Usually it's a combination of the Function key and one of the F keys, probably the one that has a picture of a monitor on it. If that doesn't work, the light may be blown out.