Some programs or drivers require specific versions of an operating system. Windows doesn’t display details about its version on desktop or on an accessible window, but you can find it in just a few steps.
You can find these details in system’s settings or using a software which will display these details about your computer.
Windows 7
Method 1: Using My Computer
1 Go to Properties
Right click on Computer, then click on Properties.

2 View the results
The new window will display the name of your Windows version, such as Windows 7 Ultimate etc. Also, it displays the platform of your operating system (32-bit or 64-bit).
Method 2: Using Control Panel
1 Go to Control Panel
Click on Start, then click on Control Panel. Alternatively, if you don’t see it, you can type Control Panel in the search box and the link to this section will appear.

2 Go to System and Security
Click on the menu System and Security.

3 Click on System
Now click on the System link. A new window will appear and you can see the version of your current Windows installation, as well as other details such as RAM memory and system type (32 or 64 bit).
Method 3: Using winver command
1 Click on Start
Then type winver
Then press Enter.

2 View the results
This window will display the numbered version, such as 6.1 (Build 7600) and the name of the version such as Windows 7 Ultimate.
Method 4: Using Sandra Lite
1 Download Sandra Lite
Download and install the program called Sandra Lite (free).
2 Go to Software
After installation, open the program Sandra Lite. Then go to Software section.

3 Click on Operating System
After you click on Operating System section, the program will start to grab info about your computer’s configuration.

4 View your Windows version
In the new window you will see the complete version of your Windows with name and number, such as Windows 7 Ultimate 6.01.7600
Method 5: Using Ctrl+Alt+Del
1 Type the command
Press CTRL+Alt+Del in the same time and a new window will appear.
In the bottom you will see the name of your Windows version.
Method 6: Using MS-DOS
1 Access MS-DOS
Click on Start, then type cmd in the search bar, then press Enter.

2 View the version number
In MS-DOS, type ver
Then hit Enter and the number of version will appear.
Windows 8
Because Windows 8 has 2 different desktop environments (Classic and Metro), if you aren’t used with these 2, i think is easier to use a specialized program to find your Windows 8 version. This is useful for beginners to Windows 8, although i will present multiple methods to find your Windows 8 version.
Method 1: Using Sandra Lite
This program can be used to display information about your hardware and software configurations, is good to keep it installed.
1 Download Sandra Lite
Download the program and install it. Sandra Lite is free.
2 Go to Software section
After you install and start Sandra, go to Software section.

3 Go to Operating System
Click on the Operating System menu. Then wait until the program will grab and display the information about your PC.
4 View the results
After a few seconds, you will see the detailed info about your Windows version such as Windows 8.1 Pro 6.3.9600.
Method 2: Using Control Panel
1 Go to Control Panel
Right click on the Start button, then click on Control Panel.
If you are on the Metro interface, go with the mouse hover the bottom-right icon to activate the vertical Charms menu, then click on Search icon.
Then search for Control Panel and enter into it.
2 Go to System and Security

3 Go to System
Then click on System.
4 View the results
Now you can view details about the Windows version and additional info such as installed RAM memory and system type.
Method 3: Using winver command
1 Go to Run
Right click on Start, then choose Run.
If you are using the Metro interface and you don’t know how to switch to the classic Desktop, then go with the mouse hover the small button from the bottom-right side, then click Search, then search for Run word, then click on Run.
2 Type winver
Type winver
Then press Enter or Ok.
3 View results
Now you can view details such as version name and number, e.g Windows 8.1 Pro version 6.3 (Build 9600).