SQL Service Access Denied and Solution

Today, am having a problem in windows server 2003 SQL database server.Actually, I have two database engine in my server, one is Server/MSFW (Firewall) and another one is Server/SQLEXPRESS.

The server/MSFW database engine has started and connecting perfectly without issues. But, the other one Server/SQLEXPRESS has not started and unable to start manually from SQL Configuration manager and Services.msc. It gave the error message in event viewer is

"UpdateUptimeRegKey: Operating system error 5(Access is denied.)"

Solution :

In Services.msc, Double click on the Service which one you faced issue (Server/SQLEXPRESS) and then click on the 'Log On' tab. Change the 'Log on as' option from 'This account...' to 'Local system account'.