How to Solve Stop 0x51: Registry Error in Windows?
Windows registry is a crucial component that stores all the options and configurations required by operating system. The database provides settings to all Windows components and also to applications that run on computer's boot files. A severe error in Windows registry can sometimes turn into an unbootable system. At times, such problems can also be associated with configuration manager. Consequently, system fails to read registry files. The stored data becomes inaccessible too. To solve these problems, you might get compelled to reinstall the system, which again causes a problem of data loss. However, if a valid backup is not available in such cases, you should use a Windows Data Recovery product that can efficiently recover the lost data from your hard disk.
To illustrate such problems, you can consider a practical situation when you try to boot a Windows-based computer. The boot operation may fail with an error as below:
"STOP: 0x00000051 (parameter1, parameter2, parameter3, parameter4) REGISTRY_ERROR"
Description
parameter1 and parameter2 are reserved values, parameter3 represents the pointer to the registry hive, if available and parameter4 gives the output of HvCheckHive if it finds the hive corrupt.
Cause
The error implies Windows registry or configuration manager issues. This indicates that registry has failed to perform an I/O operation with its files.. The possible causes of I/O error with registry files are:
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Hardware issues
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File system is corrupt
Sometimes, the error also means that a refresh operation has failed as a result of limited resources.
Solution
The following suggestions can help you recovering from the above problem:
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If you encounter this issue at next start after installing a new hardware, you should remove it and boot the computer again. The hardware might be incompatible.
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In case when no new hardware has been installed, you should create a dump file after rebooting with set recovery options.
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If the problem persists, you should select the Last Last Known Good configuration to get back the system to the last working state.
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You need to boot your computer using Windows repair or installation disk if all the above measures fail. After this, you can repair the corrupted file system by running chkdsk.
If your data still remains inaccessible because of an unbootable computer, you should use a Windows Partition Recovery tool to salvage it. These utilities use exclusive Windows Data Recovery techniques to recover lost data from a corrupted or inaccessible disk.
Stellar Phoenix Windows Data Recovery Software is an efficient product that recovers and restores lost data and partitions stored on Windows 7, Vista, XP, 2003 and 2000-based systems. The software can be ordered with a bootable DVD. The advanced Windows Partition Recovery tool uses high-end algorithms and provides an easy installation plus self-descriptive interface.
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