Database Administrators Stack Exchange is a question and answer site for
database professionals who wish to improve their database skills and learn from others in the community. It's 100% free, no registration required.
Have you used DBCC CHECKTABLE to see what the problem is? Check the REPAIR_ALLOW_DATA_LOSS | REPAIR_FAST | REPAIR_REBUILD options to potentially repair the table. Database must be set in single user mode.