Download link - http://errortools.com/download/total-system-care/ Further Information and Manual Repair - http://errortools.com/windows/error-0x80070057-fix/ 0×80070057 is a typical Windows 7 error code. It may occur when you try to back up files by using Windows Backup on Windows 7 and the backup fails. This error may also occur when you format a hard disk drive to install Windows 7. The error occurs due to multiple reasons. However, the most common causes include: Misconfigured registry keys damaged system reserved partition Misconfigured decimal symbol settings Solution: There are 4 easy solutions to solve error 0×80070057. Because there are different causes of this error, so you have to try each of these methods to find out which one will work. Solution 1: Clean the corrupt registry The registry gets cluttered with unnecessary files like junk files, cookies, internet history and bad registry keys. If these are not removed timely, they can damage the registry and corrupt dll files. It often leads to disk fragmentation or disk partition. The best way to remove this file immediately is to download and install repair tool like TotalSystemCare Solution 2: Change the Decimal Symbol Setting Error 0×80070057 sometimes can be triggered by misconfigured decimal symbol settings. Try changing the settings to fix the problem. The error is likely to occur if the decimal symbol is not set to ‘.’ (dot). See the detailed on the video. Solution 3: Create a New Partition and Reinstall Windows 7 If the error 0×80070057 is linked to partition damage, then this method is the best way to resolve it. Here’s what you need to do: See the detailed on the video. Delete this partition as well. Now click New to create a new partition. Here define the disk size and then click apply. After doing so, select disk 0 partition 2 and then click formatting tab. Once the formatting is complete, click next to continue Now you will be able to complete the installation of Windows 7 on your PC without any problem. Solution 4: Add a Registry Key Value If the underlying cause error 0×80070057 is registry issue, it can lead to system failure, crash and data loss. To resolve this error and add a registry key value here’s what you need to do: See the detailed on the video. Related error messages: error 0x80070057 backup 0x80070057 printer 0xC00D2751 Error 0xC00D2781 parameter is incorrect error 0x80070057