I am trying to restore the master database and I receive this message:

"1999/12/25 20:55:39.10 spid1 Recovering Database 'master'
1999/12/25 20:55:39.10 spid1 Error : 3403, Severity: 22, State: 2
1999/12/25 20:55:39.10 spid1 Rec_init: Found that page 12042 had non-log object id 12042 while checking Syslogs allocation
1999/12/25 20:55:39.10 spid1 Cannot recover the master datbase; exiting"

What is happening ?