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The NumLkkey has been pressed andthe letters on the righr hand side on the keyboard has been converted to a number pad. The NumLk key also doubles up as the ScrLk key, this is located near the F12 function key. Whenyou press this key to turn on the Numlk a LED will light up to indicate that the Number Lock has been pressed, press this key again to turn off the Number Lock and the NumLk LED will switch off and you will be able to type letters again.
Check to ensure the FN key is not stuck. Most keyboards have a number pad that is only activated while this key is pressed also. You can try a usb keyboard to eliminate other problems. Replacement keyboards a generally under $20.00 and easily replaced.
The Fn button is like a 'shift' key. Just as you would press <Shift> and a letter to get a capitalized letter, you press <Fn> and a function key at the same time ( <Fn><F1> or <Fn><F2> and so on) to use the secondary function for that key. For example, on one of my laptops, the <F2> key has an icon for 'wireless' (looks like an antenna). If I simply press <F2>, I will activate the function for <F2>, but if I press <Fn> and <F2> at the same time, I will turn on my wiress adapter.
but if you want to use tha additional features of function key like save, load, close and many more then you can get the software directly from official website of sony. alternativel you can download hotkeycontrol xp by which you can reconfigure you keyboard to add extra feature and options
i have two solutions for you. the touch pad can be disabled on the motherboard so plz hold-down the fn key and press the function key that has the sign of a hand pointing something and the second is that ur drivers that enables thae touch pad to work has been courrupted so plz try reinstalling for the touchpad or try repairing ur operating system.
It appears that the function key is stuck on. try an external keyboard. if the external keyboard has the same problem its an issue with windows but if not you could be looking at a replacement keyboard. hope this helps Peter