Stop SharePoint Completely/Stopping Farm PowerShell

For Wss 3.0:

Stop the farm by following these steps:

1. in the Services snap-in, stop the following services:

• Windows SharePoint Services Administration service
• Windows SharePoint Services Search service
• Windows SharePoint Services Timer service
• Windows SharePoint Services Tracing service
• Windows SharePoint Services VSS Writer service

2.    at the command prompt, type iisreset /stop.

Do it for all SharePoint installed servers in your farm.
http://technet.microsoft.com/en-us/library/cc512723(v=office.12).aspx

For Moss 2007
Stop the farm by following these steps:

1.  in the Services snap-in, stop the following services:

• Microsoft Single Sign-On service
• Office Document Conversions Launcher service
• Office Document Conversions Load Balancer service
• Office SharePoint Server Search service
• Windows SharePoint Services Administration service
• Windows SharePoint Services Search service
• Windows SharePoint Services Timer service
• Windows SharePoint Services Tracing service
• Windows SharePoint Services VSS Writer service

2. On the server that is running the Central Administration Web site, at the command prompt, type iisreset /stop.
Do it for all SharePoint installed servers in your farm.
http://technet.microsoft.com/en-us/library/cc512725(v=office.12).aspx

For SharePoint Foundation 2010

1. in the Services snap-in, stop the following services:

• SharePoint 2010 Administration
• SharePoint 2010 Timer
• SharePoint 2010 Tracing
• SharePoint 2010 User Code Host
• SharePoint 2010 VSS Writer
• SharePoint Foundation Search V4
• SharePoint Server Search v4
• World Wide Web Publishing Service

2. at the command prompt, type iisreset /stop.
Do it for all SharePoint installed servers in your farm.
http://technet.microsoft.com/en-us/library/cc512723(v=office.14).aspx

For SharePoint Server 2010

1.  in the Services snap-in, stop the following services:

• SharePoint 2010 Administration
• SharePoint 2010 Timer
• SharePoint 2010 Tracing
• SharePoint 2010 User Code Host
• SharePoint 2010 VSS Writer
• SharePoint Foundation Search V4
• World Wide Web Publishing Service
• SharePoint Server Search 14
• Web Analytics Data Processing Service
• Web Analytics Web Service

Not:  The final two services are part of the Web Analytics service application. If you are running the Web Analytics service application and choose to rename your server, you must also reconfigure the Web Analytics database locations. For details, see To reconfigure Web Analytics database locations .

2. On the server at the command prompt, type iisreset /stop.
Do it for all SharePoint installed servers in your farm.
http://technet.microsoft.com/en-us/library/cc512725(v=office.14).aspx

For SharePoint 2013

1. in the Services snap-in, stop the following services:

• SharePoint 2013 Administration
• SharePoint 2013 Timer
• SharePoint 2013 Tracing
• SharePoint 2013 User Code Host
• SharePoint 2013 VSS Writer
• World Wide Web Publishing Service
• SharePoint Server Search

2. On the server that is running the SharePoint Central Administration website, at a command prompt, type iisreset /stop.
Do it for all SharePoint installed servers in your farm
http://technet.microsoft.com/en-us/library/cc512725(v=office.15).aspx

Source: Bugra Postaci's Blog