Windows operating system is a combination of multiple modules and files, which include DLL (Dynamic Link Library) files, library files, boot files and so forth. All these files need to be intact for proper working of Windows operating system. In case, if any of the system files get damaged or deleted, operating system may not function properly and even your system could not boot up. In such cases, all of your hard drive partitions become inaccessible due to unbootable state of your system and you come across partition loss situations. At this point, Partition Recovery solutions help you to retrieve lost disk partitions and stored data.

For example, when you start your Windows computer, you may come across either of the below Stop errors:

STOP: 0xC0000221 unknown hard error
C:\Winnt\System32\Ntdll.dll (or another specific file or driver)

STOP: C0000221 unknown hard error
Path\File_name

STOP: 0xC0000221 STATUS_IMAGE_CHECKSUM_MISMATCH
Path\File_name

The above error messages might be shown in various formats, such as an error message which is shows on blue screen or the error that is shown in dialog box. The type of error message format in which it is displayed, depends upon the amount of load on the operating system at the time when it has detected the corrupted or missing file. In such cases, you need to fix the problem through Windows Partition Recovery to gain access of critical data.

Cause

You might come across this problem if the files, which are described in error message, are damaged. When Microsoft Windows XP boots up, it check the following files for integrity:

All device drive files (excluding those which are loaded by system loader for starting the system).

All DLL (Dynamic Link Libraries), including GDI (Graphics Device Interface), Kernel, Shell, Crtdll, Ntdll, User and so forth.

The issue may occur when you install a device drive for your hardware resources.

In order to fix this problem, replace damaged files with new one. If it does not work, format the hard drive and reinstall operating system. This method can fix your problem, but also remove hard drive partition and cause grave partition loss situations. This is the time when Partition Recovery Software come into picture.

Windows Partition Recovery tools are capable of handling all of the partition loss situations. The allow you to recover lost data on your own as they have rich graphical user interface. The tools never alter original data as they have read-only conduct.

Stellar Phoenix Windows Data Recovery is the most advanced tool for quick, secure and easy recovery. It recovers lost data from FAT32, VFAT, NTFS and NTFS5 file system partitions. The software works well with Microsoft Windows 7, Vista, 2003, XP and 2000.