Error :-
Performance counter registry hive consistency sql server 2008 express
Solution :-
1) Open Command Prompt in Administrator Mode.
2) Run SQL setup using following command line argument
SQLEXPRWT_x86_ENU.exe /ACTION=install /SKIPRULES=PerfMonCounterNotCorruptedCheck
(SQLEXPRWT_x86_ENU.exe use your own setup file name here)