Looks like a I/O error so your storage system has problems, which cause one of your page cannot be read. What is the result of putting the db back to multi-user mode?

What I will suggest is to clone the whole disk image that used to store the database files, then use DBCC CheckDB with REPAIR_REBUILD or REPAIR_ALLOW_DATA_LOSS parameters to correct the errors.

More info about this error: http://www.datanumen.com/sql-recovery/problems/logical-consistency-based-io-error-incorrect-checksum.htm