Hi L.Verlaine,
Follow the methods listed below:
Method 1:
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
Method 2:
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.
Also see
Installing and reinstalling Windows 7
Warning
Antivirus software can help protect your computer against viruses and other security threats. In most cases, you shouldn't
disable your antivirus software. If you have to temporarily disable it to install other software, you should re-enable it as soon as you're done. If you're connected to the Internet or a network while your antivirus software is disabled, your computer is vulnerable
to attacks.