computer is stuck on windows configuring updates

my computer is stuck on windows configuring up dates stage 3 and won't go any further and it keeps restarting its self. and i only know how to use it don't know anything about fixing kinks.

 

Go into Safe Mode and try System Restore. The update should have created a Restore Point just before installation.

To get to Safe Mode, reboot machine, after memory counting screen, repeatedly hit F8.

To get to System Restore, it is at Start Button > All Programs > Accesories > System Tools > System Restore.