omg.....Jus rite now wen my bro brot dat lapo back i told him to try dis.......n it worked{(happy2)} yippy ...thanx Don n accept it frm my bro z side also.....u r geniouslooks like you have Acer Inspire One
and I think your FN key is the problem..Make sure your FN key is not pressed or its not on...
Try this: Press and Hold FN key then hit num lock key.. and then see if your issue still exist or not..