Long shot here but see if your can access your registry:

Paste this in notepad and save as a .reg

Code:
REGEDIT4
[HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\System]
"DisableCMD"=dword:0
If you are able to add this reg value you will now be able to access cmd.exe and run batch scripts.

Article found here: [url]http://www.winguides.com/registry/display.php/**4*/[/url]