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#11
I thought you said you did a Repair Install. Isn't that why you asked why it could not repair files which SFC found corrupt?
If SFC cannot repair System files when run 3 times from Command Line as Bill suggested, then the next step is a Repair Install. SFC -SCANNOW Run in Command Prompt at Boot
If a Repair Install cannot fix it then you may have serious corruption requiring wiping the HD (of boot code) and clean reinstall. This is a much superior install to factory OEM with all of the corrupting preinstalled bloatware:
Clean Install Windows 7
Clean Reinstall Windows 7 Factory OEM
Diskpart Clean Command
DISKPART At PC Startup
How is overall performance? What problems do you have?