I set a reboot script in the gpedit.msc. It was a mistake , and now I cant get into the gpedit.msc to fix it. this is on the local machine policy.
The reason you haven't had any replies is because no-one can be sure you aren't trying to hack the Group Policy without the network Administrator finding out. Try going into Safe Mode as Administrator and if you don't know the password, try asking the person who manages the network.