This i find is a time saver for me hope it will be for you to enjoy.
Step 1
You will need to get your XP CD and locate the folder called:
I386
This is a major folder and should be one of the first you see, now copy this onto your hard drive into the system root. For most of you that is going to be C:\ so you should end up with a folder that looks like: C:\I386
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Step 2
Now you will need to tell your computer you now have the files on your PC. We do this is the registry (type regedit in the Run box on the start menu) by navigating to:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\
CurrentVersion\Setup
You will see various entries here on the right hand side. The one we want is called:
SourcePath
It probably has an entry pointing to your CD-ROM drive, and that is why it is asking for the XP CD. All we need to do is change it to:
C:\
Simply double click the SourcePatch setting and a new box will pop up allowing you to make the change.
Now restart your computer and try scannow sfc again

Step 1
You will need to get your XP CD and locate the folder called:
I386
This is a major folder and should be one of the first you see, now copy this onto your hard drive into the system root. For most of you that is going to be C:\ so you should end up with a folder that looks like: C:\I386
-----------------------------
Step 2
Now you will need to tell your computer you now have the files on your PC. We do this is the registry (type regedit in the Run box on the start menu) by navigating to:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\
CurrentVersion\Setup
You will see various entries here on the right hand side. The one we want is called:
SourcePath
It probably has an entry pointing to your CD-ROM drive, and that is why it is asking for the XP CD. All we need to do is change it to:
C:\
Simply double click the SourcePatch setting and a new box will pop up allowing you to make the change.
Now restart your computer and try scannow sfc again