Stop and Start Services using PowerShell

Start –> All Programs –> SharePoint 2010 -> SharePoint 2010 Management Shell

#(Enter your Service Name)

$ServiceName = “SQL Server Analysis Services” 

Get-SPServiceInstance -server $env:COMPUTERNAME | where-object {$_.TypeName -eq $ServiceName} | Stop-SPServiceInstance -confirm:$false

Get-SPServiceInstance -server $env:COMPUTERNAME | where-object {$_.TypeName -eq $ServiceName} | Start-SPServiceInstance -confirm:$false

#If you want to start Central Admin service, use the following command:

Get-SPServiceInstance | Where-Object {$_.TypeName –eq ‘Central Administration’} | Start-SPServiceInstance