Can't Run SFC /SCANNOW

Please help!... I can't run 'SFC.EXE. /SCANNOW on XP Pro SP3. My AV doesn't find any viral content, and I have never had a problem running before.
Here's what is happening: From 'CMD'- 'SFC.EXE /SCANNOW', progress bar pops up, then a window pops up asking for the disk, install disk and a window keeps popping up with the retry-continue-cancel note. That's it! When I try to cancel, I just keep getting the Yes/No query. Can't get out, unless I restart the pc. When doing this, it takes forever to reboot. The reason I decided to run the 'sfc /scannow' is because when I log on in the morning, all of a sudden some of my desktop icons have lost their 'logo', and I have to go to properties and do the change icon thing. I do have an icon file (ico) in My Documents where I keep them. There are a few other minor system nuances going on, also, from time to time.
Thanks for any help!
tim

 

Easiest first step would be to restore the computer to a date before you noticed these problems.

The next option is a bit more of a hassle.
Do you have a i386 folder on your computer?
If so and it is not located at C:\ then

These steps were posted by usasma at another forum.

 

Thanks y'all. I'll check the location of 'i386'. I, as user, have admin privilege- that's the way I set my account up. I have my original Windows CD, and I have a Windows XP Back Up Media CD w/ SP3 slip streamed in- It came with my Full Retail OS. That is the disk I have always used for installs, and it has always worked for running 'sfc /scannow'. Let me see if I can create some screen shots and attempt a more detailed picture of what my problem is. Can't restore to an earlier point- trust me, it would cause way more issues than I have now.
tim

 

Here is what my 'C:\' looks like, and a shot of 'i386' search.
Thanks!
tim