Error 0x80070057 while trying to configure Windows 7 Backup

Not recommended
Many of such sites are offering files which have been tampered - and this one doesn't even tell you which version it is that you're downloading (which probably means that it's the RTM version)

None of the files you show in Total Commander are the ones required for the SFC, so I assume that you found the proper ones later?

You have a number of instances of this error remaining...

Code:

2014-08-17 21:53:16, Info                  CBS    Appl: Partial install Status testing, package: Package_for_KB976933~31bf3856ad364e35~amd64~~6.1.7601.17514, partially installed (true/false), 0
2014-08-17 21:53:16, Info                  CBS    Failed to find package from aggreated XML string, package: Package_for_KB976933~31bf3856ad364e35~amd64~fr-FR~6.1.7601.17514 [HRESULT = 0x80070490 - ERROR_NOT_FOUND]
2014-08-17 21:53:16, Info                  CBS    Failed to find package from deployment update [HRESULT = 0x80070490 - ERROR_NOT_FOUND]
2014-08-17 21:53:16, Error                 CBS    Failed to check whether package is partially installed, package: Windows7SP1-KB976933~31bf3856ad364e35~amd64~~6.1.1.17514 [HRESULT = 0x80070490 - ERROR_NOT_FOUND]
2014-08-17 21:53:16, Info                  CBS    Failed to evaluate external applicability for package update: 976933-0_neutral_PACKAGE [HRESULT = 0x80070490 - ERROR_NOT_FOUND]
2014-08-17 21:53:16, Error                 CBS    Failed to call external evaluate applicability on package: Package_for_KB976932~31bf3856ad364e35~amd64~~6.1.1.17514, Update: 976933-0_neutral_PACKAGE [HRESULT = 0x80070490 - ERROR_NOT_FOUND]

Is SP1 actually installed?

Does backup work now?

It's set to use drive F: for backup - you should be able to change that in the options if necessary.