Error Message "UNMOUNTABLE_BOOT_VOLUME

You have error message when turn on your laptop
UNMOUNTABLE_BOOT_VOLUME
first thing, oops the hd crash and thing what about my data, dont worry you can fix it

the point it you must repair your hd with running command chkdsk /r in command prompt, but can go to windows, so how came, first thing you must boot your laptop from cd that can in command prompt.

in this case i boot from hirens's cd,
From menu hirens i chose (that step is)
1. NTFS Ext2FS, Ext3FS (FileSysyem) Tools..
1. NTFS Dos Pro. 5.0

let the NTSF Dos Pro running and procces, when ask run CHKDSK, answe with YES (by default is YES) so you can obey this dialog box,

then the hirens cd (NTFS Dos Pro) fix your hd, after finish you can boot your laptop and boot from your hd/system not from cd/dvd

after login to windows, you can copy or backup your data to another device like another hd or cd or flashdisk, congrotulation