Windows won't boot? Try these tips

When faced with the blue screen of death, you have options

By , ITworld |  Windows


Rebuild the Boot Configuration Data

Windows' new boot loader, dubbed BCD (Boot Configuration Data), includes all boot information and parameters. If BCD is defective in any way, Windows simply fails to boot. If startup repair can't fix your problem, it's time to rebuild the entire Boot Configuration Data from scratch. From the command prompt, type in the following commands to rebuild the BCD:

bcdedit /export C:\oldBCD 
cd c:\boot 
attrib bcd -s -h -r 
ren c:\boot\bcd bcd.old 
bootrec /RebuildBcd

These commands will back up your BCD store, rename it (as a double-backup) and then rebuild the entire thing in seconds. The last command detects all currently running Windows versions and restores their boot data.


Reset system partitions back to Windows 7

If you get an "Operating system missing" error, and all the steps listed so for haven't helped, partition information might have been screwed up -- by an older backup-program, for example. In this case, you need to reset your system partition to the Windows 7 standard. Go to WinRE's command prompt and type in bootsect /nt60 C:\. This will mark your C drive as a proper active Windows 7 partition.


Wipe out boot infections once and for all

If your PC has been infected with a boot virus, you might be able to get rid of it using the steps detailed in the previous section. However, there's nothing hindering the virus from re-infecting the files once your system is up and running again. My advice: Go with one of the countless antivirus live CDs. Also give Windows System Sweeper (which isn't on the list in the first link) a try. It's a version of Microsoft Security Essential 2 that can be burned to CD/DVD or copied over to a bootable thumb drive.


Wipe out boot infections once and for all

If your PC has been infected with a boot virus, you might be able to get rid of it using the steps detailed in the previous section. However, there's nothing hindering the virus from re-infecting the files once your system is up and running again. My advice: Go with one of the countless antivirus live CDs. Also give Windows System Sweeper (which isn't on the list in the first link) a try. It's a version of Microsoft Security Essential 2 that can be burned to CD/DVD or copied over to a bootable thumb drive.

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