I have a friend that has a 3-4 month old Inspiron 9100. It's top of the line, 512 RAM, 3.4 processor, 256 mb radeon graph card, 100 gb storage. She started having problems with a few programs, wireless internet stopped working, somebody told her to run an error check on the c and it came up with errors. I ran chkdsk and it said 4 kb of bad sectors. She talked to dell and they're already sending her a new harddrive. What does this mean? 4kb of bad sectors? Is it a hardware thing or could it have been fixed by reformatting? Thanks.