my advent laptop keyboard has locked itself. ie. when i press the keys with a box in the TOP righthand corner, that is what i get, and i cant get a capital. You can tell from this posting what i get but to illistrate better if i press  u ,i get 4 ,and i dont` know how to unlock this function.
please help.Are you refering to Numlock?This is SN Advent Laptop. It has no number lock.
The letters  U I O P J K L M .......have addtional functions in the top right hand corner. When the key is pressed this top right function works, and to enable the letter in small case I have to hold down the Fn key.
Hope this helps,
MartynThe following article may be of use:

Keyboard cleaningThanks...........done that,,,still got the problem.click keyboard icon......in the control panel.....and check/ change the language setup..............>.[.wineprovider. when i press  u ,i get 4 ]CRACKED IT............For future reference..........Hold down the function button in conjunction with the PrcScn key and HEY PRESTO all is working fine.
Please accept my sincere thanks to all who TRIED to solve
my problem.
Good Luck and God Bless,
MartynAnd that combination locks your keyboard?