Remove Administrator Share(\\systemname\C$)

Click Start—>Run type regedit click ok

Open the HKEY_LOCAL_MACHINE branch.

Open the SYSTEM branch.

Open the CurrentControlSet branch.

Open the Services branch.

Open the LanmanServer branch.

Select the Parameters branch.

Select Edit, New, DWORD (32-bit) Value.

Type AutoShareWks and press Enter. (You can leave this setting with its default value of 0.)

Restart Windows  to put the new setting into effect.

I hope this work out for you this time.