The 1,Q,A,Z and caps lock keys on my brand new (less than 1 month old) G60-100EM HP laptop sometimes stop working. Operation can often be restored by holding down another key, i.e. "fn", and pressing one of the non functioning ones. Often these keys operate normally for quite a while and then for no obvious reason the problem occurs again. Any advice would much appreciated. I have tried re-installing the keyboard drivers but to no avail.