A:AnswerBest Buy charges for the upgrade because is comes standard with 6gb. In order to get 12gb you have to have additional RAM, which costs money. It will probably be between 40 and 80 depending on where you can find the RAM at the best deal.
A:AnswerI do not know if you can disable the touchpad, but I attached a wireless mouse with no problem and it works fine. I can now use the mouse or touchpad.
A:AnswerDonna,
Unfortunately, these laptops lack acknowledging when the number key is is engaged or not. I was thinking the same thing until I looked closely and read my online manual. I guess, we will have to pay close attention when using the number keys to ensure that it is engaged. I hope this was helpful.