Youaretheadministratorof10WindowsXPProfess

Youaretheadministratorof10WindowsXPProfessionalcomputersforyourcompany.ThecomputersaremembersofaWindows2000domain.Becausethecomputersareusedinapublicareainthecafeteria,youauditallsecurityeventsonthecomputers.AusernamedMarcreportsthathewasusingoneoftheWindowsXPProfessionalcomputerswhenthecomputersuddenlyshutdownwithaSTOPerror.Whenthecomputerrestarted,Marcattemptedtologonbyusingthesameusernameandpasswordthatheusedbefore.Marcreceivedthefollowingerrormessage:"Youraccountisconfiguredtopreventyoufromusingthiscomputer.Pleasetryanothercomputer."MarcstatesthathedidnotdoanythingtocausetheSTOPerrortooccur.YouwanttoensurethatMarccanusethiscomputer.

Whatshouldyoudo？（）