I have a Samsung laptop and recently the number keys on the right side (10 key pad) do not work except for the #5. What could be the malfunction? I used it every day for school work especially as an accounting and economics major. All of a sudden it doesn't work except for #5; I noticed more problems with my system it seems since I had to conveniently download Chrome in order to get Windows 8 to work for many of my school programs. How sweet of Microsoft and Google to climb into bed together and force use of both products simultaneously. Anyway, it's not old it's about 2 years at max; it came with Windows 7, intel, CORE i3, and no virus has been detected when scanned. The thing seems slower and more unresponsive since this Windows 8 update and the installation of Chrome. Any help would be greatly appreciated.