The System Restore tool built into Windows Vista and Windows 7 allows the user to troubleshoot any system problem, except when the bootloader itself is damaged. This situation must be corrected manually.
Necessary
- - installation disk for Windows 7;
- - utility Bootrec.exe;
- - utility DCDboot.exe
Instructions
Step 1
Change BIOS setup options to use DVD drive to boot Windows.
Step 2
Use the installation disc until the Install window appears.
Step 3
Open the System Restore section and select the desired operating system in the System Restore Options dialog box.
Step 4
Click the Next button to confirm your choice.
Step 5
Select Command Prompt in the next dialog box.
Step 6
Enter the Bootrec.exe value in the command line field and wait for information about the startup keys for the Bootrec.exe utility to appear.
Step 7
Use the Bootrec.exe / FixMbr command to write a master installation entry to the system partition if the entry is corrupted or non-standard code is removed.
Step 8
Use the Bootrec.exe / FixBoot command to write a new boot sector if the boot sector is damaged and / or after installing a previous version of Windows.
Step 9
Enter bootsect / NT60 SYS in the command line field to overwrite the boot sector with BOOTMGR compatible code.
Step 10
Enter Bootrec.exe / ScanOs in the command line field to scan all drives to identify installed operating systems and display lists of unregistered systems.
Step 11
Enter Bootrec.exe / RebuildBcd in the command line field to completely rebuild the Windows Boot Configuration Data Store and add the found operating systems to the new store.
Step 12
Enter the value bcdedit / export C: BCDcfg.bakattrib -s -h -k c: oot cddel c: oot cdbootrec / RebuildBcd to remove the previous Windows configuration data store.
Step 13
Use the BCDboot.exe tool to restore the boot environment to the active system partition.
Step 14
Enter bcdboot.exe ewindows, where ewindows is the path for the computer system.
Step 15
Reboot your computer.
