Sony Vaio Laptop only typing numbers 1234567890

Based on ASCII decoding, if the top 4 bits are stuck to binary 0011 then pressing alpha keys will result in numbers. Besides the numbers, only the keys for colon (:), semi-colon (;) and question mark (?) will also be correct as the top 4 bits for these are binary 0011. If this description fits what is happening in your case, the problem is likely in the keyboard decoding hardware and you should take your Sony Vaio into a Sony authorized service center. Finally, if your Sony Vaio is running Windows XP and you can manage to run osk (the On Screen Keyboard is a little known utility that is included with XP), you will bring up an On-Screen Keyboard window where you can just use your mouse to click on the keys to type characters thus bypassing the keyboard hardware altogether. First, at the lower left corner of the desktop, click on the start button, then on the start pop-up window, click on Run... Next turn on Num Lock by pressing the NumLk key to enable the embedded numeric keypad. Then while holding down the Alt key, press the number keys for 7 and 9 then release the Alt key to get the letter O. Next while holding down the Alt key again, press the numeric pad's number keys for 8 and 3 (L) then release the Alt key to get the letter S. Next while holding down the Alt key again, press the numeric pad's number keys for 7 and 5 (I) then release the Alt key to get the letter K. Finally, once the characters OSK are in the Open: field, click the Run window's OK button. This will get you the On-Screen Keyboard which you can then use to type any character by clicking on it and which will be placed at the current cursor position on the screen (try it with notepad). Based on ASCII decoding, if the top 4 bits are stuck to binary 0011 then pressing alpha keys will result in numbers. Besides the numbers, only the keys for colon (:), semi-colon (;) and question mark (?) will also be correct as the top 4 bits for these are binary 0011. If this description fits what is happening in your case, the problem is likely in the keyboard decoding hardware and you should take your Sony Vaio into a Sony authorized service center. Finally, if your Sony Vaio is running Windows XP and you can manage to run osk (the On Screen Keyboard is a little known utility that is included with XP), you will bring up an On-Screen Keyboard window where you can just use your mouse to click on the keys to type characters thus bypassing the keyboard hardware altogether. First, at the lower left corner of the desktop, click on the start button, then on the start pop-up window, click on Run... Next turn on Num Lock by pressing the NumLk key to enable the embedded numeric keypad. Then while holding down the Alt key, press the number keys for 7 and 9 then release the Alt key to get the letter O. Next while holding down the Alt key again, press the numeric pad's number keys for 8 and 3 (L) then release the Alt key to get the letter S. Next while holding down the Alt key again, press the numeric pad's number keys for 7 and 5 (I) then release the Alt key to get the letter K. Finally, once the characters OSK are in the Open: field, click the Run window's OK button. This will get you the On-Screen Keyboard which you can then use to type any character by clicking on it and which will be placed at the current cursor position on the screen (try it with notepad).