Windows Vista Service Pack 1 (SP1) became available on Windows Update and Download Center for Windows Vista users on March 18, 2008. The update includes various substantial improvements in terms of performance, reliability, user's experience and support to various new hardware and standards. But at times, the deployment of the service pack via Windows Update can cause a machine to become unbootable. This forces you to attempt Windows repair using Windows Recovery Environment. But if you fail in your attempts, you might need to perform clean reinstallation of Windows Vista, which causes data loss. In such cases if your backup fails or is currently absent, you are suggested to use a powerful data recovery utility that could restore the data thus lost.
For an instance, consider that you use Windows Update to install Windows Vista SP 1 on your computer. The process appears to be completed as you see progress status showing 100% completion. But when you start the computer, it gives the below error message:
Info: Windows failed to load because a required file is missing or corrupt.
After you receive this error message, you cannot boot the system and the process halts. It also prompts you to boot the system from Windows Vista installation disk to repair. Attempting to do so results failure as it says that it cannot repair and suggests you to send the report thus generated to Microsoft. This makes your data inaccessible.
Try these steps to solve the existing issue:
*Boot your computer using Windows Vista installation disk. You might need to configure BIOS to boot from CD or DVD
*Specify Language, Time, Currency and other options. Click Next
*Click 'Repair your Computer' and select the target Windows installation
*Choose 'Command Prompt' in 'System Recovery Options'
*Restore hal.dll, ntkrnlpa.exe and ntoskrnl.exe files in your \Windows\System32\ folder
*Restore acpi.sys , volmgr.sys, disk.sys, volsnap.sys, msisadrv.sys and pci.sys files in your \Windows\System32\Drivers folder
*Exit the command prompt and restart the computer and check if the problem persists
*If you still cannot boot the system, reinstall Windows and restore data from backup.
*Use an efficient data recovery software in case of any backup concerns. Data Recovery applications are safe recovery products embedded with high-end algorithms to locate missing data. It is recommended to use these partition recovery products before trying to format or install anything on your computer.
Stellar Phoenix Windows Data Recovery Services are powerful utility to provide systematic recovery of lost data. It is compatible with Windows 7 RC1, Vista, XP, 2003 and 2000 based systems. Providing advanced features, self-descriptive interface and comprehensive results, this data recovery software serves as complete solution while all logical data loss instances.
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