Win7 system NTLDR is missing file loss how to do?

1, the computer hard disk information was tampered with, that is, it is possible to build the system can not find the hard drive, can not find the system partition system files, access to the WIN7 system BIOS panel, and then find standard CMOS setup items, and then set the hard drive to auto.

2. Under the Win7 system, set up the system activity partition, find an MS-DOS Toolbox CD, run Fdisk, and then select 2 (set active partition) for system partition activation.

3. If you are unable to operate, you may be unable to locate the system partition because the master boot record in the Win7 system hard disk partition is corrupted, so you can only run FDISK/MBR under the MS-DOS toolbox.