get message stop: c0000218 registry file failure the registry cannot load the hive file or its log or alternate. it is corrupt or not writable. any help would be great

get message stop: c0000218 registry file failure the registry cannot load the hive file or its log or alternate. it is corrupt or not writable. any help would be great![]()
not sure what the last thing was done on the pc its my sons laptop i do have a vista cd but not the 1 for this pc does it matter ?