Hello bital and welcome to Seven Forums.
When you get the message that Windows Resource Protection could not perform the requested operation, it means that there are some system files that could not be repaired/replaced. As it says at the beginning of the tutorial, "This shows how to start the PC and open a command prompt at boot so the Windows system files can be checked and repaired if possible
If you look at option three in this tutorial
, it gives information on how to find out which files could not be repaired/replaced. It also provides info on how to manually replace those files.
Personally, I find option three to be time consuming. I prefer going right to a Repair Install
. It takes about an hour to run and it tries to repair the operating system while preserving your user accounts, data, programs, system drivers, etc. If it finishes successfully you'll have to reinstall Windows Updates which could take more than an hour. If a repair install doesn't fix things you may have no recourse but to do a Clean Install. Clean Install Windows 7 Clean Reinstall - Factory OEM Windows 7