Okay; I have been having issues with Firefox and certain websites that may be unrelated, but when I couldn't start Windows Media Player, I started hunting for answers. Based on forum advice from the Microsoft Support Community, I ran System File Checker, which 'detected corrupt files' and said that they would be repaired after a reboot, and told me where to view the log. I tried to view the log, but upon attempting to open it, was met with a whitespace inside the Notepad view window, and the overlaying dialog box read "Access denied." I rebooted the computer and tried again; same result. I shrugged and moved on since my problem was fixed. Only one day later, I tried running SFC again, and got the same result described above.
My question is; why can't I read the log file? I checked over the file and folder permissions, and found absolutely no reason that my user account (which IS an administrator account) shouldn't just open the .txt file for me. Tag-on question - is it normal for the log file to be 30k+ in size? Insightful input will be appreciated.