Hello Friend...
After installing your service you need to start it....
1) Goto Control Panel..
2) Administrative tools
3) Services
4) Find your service
5) Right Click and start it
6) Now your service will start and working....
other wise
1) Press WindowsKeY + R
2) In Run type it services.msc
3) Then Hit Enter it will open a service manager
4) follow 4 and 5 step to start your service....
or you can also start your service with the finish code of your setup project..
but before that code your service must be installed on your computer..
also you can make your service as start automatically when windows start so it will start after you restart your computer.
I hope this will help you..
For Basic information on services please see this article
Simple Windows Service Sample[
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