Thanks. We're going to try this a little differently.
Restart the computer such that you are looking at the login screen (but don't log in)
While holding down the Shift key click the Power icon in the lower right corner (far right)
and select Restart. Release the Shift key after about 5 seconds.
The Choose an Option page should load
click Advanced Options
click Command Prompt, restart and select your account and enter your password.
At the prompt screen type: C: and press Enter
at the new prompt type: cd\windows\system32 and press Enter
At the system32 prompt type: sfc /scannow and press Enter.
Hopefully the scan will now run and if all goes well, correct the iphlpapi.dll file