Need Help Unable to Mount Location

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http://askubuntu.com – So first off, i am not able to start Windows and am using a DVD copy of Ubuntu to start up. Im pretty sure that if i reinstall windows that i will be able to start up with windows again but by doing this all my data will be wiped clean and so a friend recommended me to Ubuntu. Whenever i go to the go on the top bar and computer i see my 750 GB Hard Disk: OS but whenever i click it i get this [code]Error mounting: mount exited with exit code 13: ntfs_attr_pread_i: ntfs_pread failed: Input/output error Failed to read NTFS $Bitmap: Input/output error NTFS is either inconsistent, or there is a ha (HowTos)