How To Find Which Service Pack Level PC Is Running On Your Windows Vista

Knowing what service pack is installed on your Windows Vista system is important for a number of reasons.
Some software programs may require that Windows Vista is patched to a certain service pack and may not operate correctly if the service pack is not installed.
Knowing the service pack level you’re currently running in Windows Vista can also come in handy when troubleshooting certain problems or when manually installing a service pack.
Follow the easy to follow steps below to find out what service pack is currently installed in your Windows Vista system:

Here’s How:

1. Click on Start and then Control Panel.

Tip: In a hurry? Type system in the search box after clicking Start. Choose System from the list of results and then skip to Step 4.

2. Click on the System and Maintenance link.

Note: If you’re viewing the Classic View of Control Panel, you won’t see this link. Simply double-click on the System icon and proceed to Step 4.

3. Click on the System link.
4. In the Windows edition area of the View basic information about your computer window you’ll find your Windows Vista edition information and the service pack level. See the screen shot on this page for an idea of what you’re looking for.

Note: If you don’t have any service pack installed, you won’t see “Service Pack 0″ or “Service Pack None” – there will be no reference to a service pack at all.