There's no sign in the CBS log that SFC actually ran at all.
Please run the CheckSUR tool from http://support.microsoft.com/kb/947821
(you'll need to look in the details for Method 2)
Then zip the CheckSUR.log and attach it to your reply.
The tool can take anywhere from 5 mins to a couple of hours to run (or 'Install') depending on how much it has to do, and may exit silently - it may appear to freeze for most of that time, but be patient.
The CHECK SUR tool will not run in safe mode.
I keep forgetting that
OK ....
Let's try an offline SFC scan.
Your best option in that case is to run the CHKDSK and SFC in offline mode from a Recovery Environment boot.
Reboot the computer, and tap the F8 key until you get the advanced boot menu up - one option should be 'Repair your computer'. Pick that one.
Log into your normal account.
You'll get a set of options - pick the Command Prompt one.
At the command prompt, type DIR C:\
- if we're lucky this will bring up a listing of your normal C: drive contents, including the Program Files folder(s) and the Windows folder.
If not, try D:\ or E:\ (etc. until you get the right letter)
then type the following command
sfc /scannow /OFFBOOTDIR=<drive>:\ /OFFWINDIR=<drive>:\Windows
where <drive> is the letter you found above.
Wait for the command to complete. (make a note of the response!).
Once it has, type EXIT and the pick the option to reboot.
Post another MGADiag report
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