Follow the steps listed in the article mentioned below to open the CBS log file:
How do I open a file if I get an access denied message?
Refer the following article for further instructions on fixing the files that could not be fixed by the System File Checker tool:
How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7
Perform repair installation of Windows 7 to fix the issue.
a. Log in to an administrator account on your computer.
b. Disable antivirus software, other security program and any third-party firewall.
Note Ensure to enable the antivirus software, security program and firewall after successful installation
c. Insert the Windows 7 installation DVD onto the DVD drive.
d. While still in Windows 7, click on the “Run setup.exe” option in the AutoPlay window.
e. When the User Account Control (UAC) message is displayed, click “Yes”.
f. Click the “Install Now” button to start the installation.
g. Click the “Go online” to get the latest updates.
h. Check the “I accept the license terms” box and click “Next”.
i. Click the “Upgrade” option.
Note During the installation process, your screen may flash and computer will restart a few times.
Follow the on-screen instructions and proceed with the installation.
After booting to the desktop, perform Disk cleanup to delete unwanted files.
Note You may have to activate your copy of Windows.
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