After upgrading to Service Pack 1, sometimes i got failed to login my server

at this time, Server Configuration Manager is like below

Do I need to change anything? thank you.
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Once I could login, Server Configuration Manager is like below

During the failure time, I try to start "SQL Server (MSSQLSERVER)" but got fail to start. What is wrong in my R2 express? Please share me your idea.
After running "SQL Server (MSSQLSERVER)", I could login in to my server as 'sa'.



