The 'clfs.sys' (Common Log File System Driver) file in Windows Vista is a critical system file that is needed when you start the system. If some mishap happens with this file, then you may not be able to start the system. These situations can occur due to several issues such as virus infections, abrupt or improper system shutdown, power outages, etc. In such cases, you should employ appropriate methods to workaround the situation and recover Windows data. If you do not succeed in doing so, then you should use a third-party Windows data recovery software to do the needful.
Consider a situation wherein you are unable to start your Windows Vista-based system. In this case, the following STOP error message is displayed on a blue screen:
The most possible cause of this issue is that the Common Log File System (clfs.sys) driver does not fix the $TxfLog file after the file is damaged. In some cases, Windows Vista may not start apart from displaying this STOP message, you may not be able to start the system until you remove the damaged disk.
To resolve this system startup issue, you should download and install a hotfix, which is available at Windows Support site, to handle such situations. Restart the system after doing so. Meanwhile, you can perform the following methods as a workaround of the problem
Remove the damaged disk from the computer, if you have installed multiple disks and the damaged $TxfLog file is not contained by the disk having Windows Vista.
In case there is only one disk in the system and you have Windows XP Setup CD, then you should use it to reformat the disk and then reinstall Windows Vista.
The Windows Vista system will be recovered by installing the recommended hotfix. However, there have been instances when this hotfix does not work as expected, thereby forcing you to look for alternative Windows recovery solutions. For this purpose, you should use a third-party Windows data recovery software to recover all the inaccessible data. These tools are read-only in nature that do not damage the existing files or settings that can further aggravate your problem
The most recommended data recovery software that recover Windows files from NTFS, FAT, and exFAT file systems is Stellar Phoenix Windows Data Recovery. Capable of recovering Windows data from various storage devices such as hard drives, pen drives, memory cards, iPods, etc, this Windows data recovery software is compatible with Windows 7, Vista, Server 2003, XP, 2000, and NT4(SP6). Bundled with a Boot CD that helps in starting the inaccessible systems, this Windows recovery software is available in Home and Professional editions.