I have recently purchased a used laptop an acer c300 tablet travelmate. I the first time i used it everything seemed to be fine until i tried to save my word document to a cd-r, then the problems started. At first it sounded like the disk drive was having problems( very loud and choppy sounding), then i calmed down and asked what i wanted to do, so clicked on save data to disk. everything was going well then it stopped and said that it was unable to format disk. the OS is vista. any ideas