Group policy should'nt be disabled...Youre problem lies in parental controls,open user account,disable parental,
vista probably wont do this because of security settings,so.Try to disable,it wont,restart pc.On restart,tap the
F8 key,enter normal safe-mode,in run or cmd,type: services.msc in msc,scroll to parental,double click,set to
disable,exit,restart pc.Also,defender/group policy/installer/etc are in services.msc,just understand youre editing...