| A Windows system might fail to boot if one or more | | | | fail-proof settings and set hard drive as the primary |
| required boot files are found to be missing or corrupt. | | | | boot device. If this is not the case, you should repair |
| You can try troubleshooting such problems by using | | | | Windows startup files using Windows Recovery |
| Windows installation disc. But if it fails to perform the | | | | Environment as follows: |
| required task, you might need to install the operating | | | | Insert Windows Vista or Windows 7 installation disc |
| system, which causes data loss. In such cases, if no | | | | into the computer and boot the system |
| valid data backup is available, you need to use data | | | | Press any key for starting the repair process when |
| recovery utilities. | | | | prompted for |
| For an instance, consider that you try to boot a | | | | You need to then select the time, language and |
| Windows Vista or Windows 7 based system and it | | | | currency and the desired input method |
| fails to boot displaying the below error message on | | | | Click 'Next' and select 'Repair your computer' option |
| screen: | | | | The 'System Recovery Options' dialog box appears, |
| “The boot selection failed because a required | | | | at which you need to select the Windows installation |
| device is inaccessible” | | | | you need to repair. Click 'Next'. |
| This error displays with 0xc000000f error code. You | | | | You can then select the 'Startup Repair' option. |
| cannot boot into the system even at subsequent | | | | Instead, you can also run 'Bootrec.exe' through |
| attempts of restarting the system. | | | | 'Command Prompt' |
| Cause | | | | If the above measures don't boot Windows |
| The above error might occur due to any of the | | | | successfully, you should reinstall the operating |
| below reasons: | | | | system. You should then use your recent data |
| Incorrect BIOS settings for the boot device, usually | | | | backup to restore the lost data. If no clean data |
| hard drive. This might occur if you have recently | | | | backup is available, use data recovery software for |
| performed some changes in system BIOS settings. | | | | efficiently extracting it. data recovery utilities are |
| One of more Windows boot items, like MBR, BCD | | | | powerful third-party tools embedded with high-end |
| store etc., are missing or corrupt | | | | scanning algorithms. The software also enable you to |
| Solution | | | | perform comprehensive partition recovery in all cases |
| If Windows is unable to boot due to changed BIOS | | | | of logical crashes. |
| settings, you should configure BIOS to default | | | | |