disconnected sql server when run stored procedure

Latest Revision
Hi,
disconnected sql server when run stored procedure.
when i try to create or alter stored procedure it automatically disconnected dbserver.

only for stored procedure create,alter.

this error I am get it.

A transport-level error has occurred when receiving results from the server. (provider: TCP Provider, error: 0 - The semaphore timeout period has expired.)

How to solve this issue...

Thanks,
Karthikeyan,Bangalore.