Does the file "C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\LOG\ERRORLOG" exist? Is it readable?
Do you have a backup of the master database?
Can you do a check of the C drive? It looks like there's registry damage and damage to a couple of files. If so, that indicates hardware problems. Is C drive a raid array? If so, check to see if the raid controller is reporting errors
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability