To see this information on all versions of Windows you have to:
Open
                Start then Control Panel and
                System.
You will see „basic information about
                your computer” screen.
Hint:
- If you can't find
                the control panel on the list use the search bar or Cortana.
- If
                you can't find System icon in Control Panel change the view to
                Small or Large Icons or click System and Security and then System.
You can also refer to this article:
                Check
                    Computer Specifications
            
                We always recommend downloading at least your network card drivers
                since they might be missing after the installation or upgrade. The
                best thing to do is to download all of your computers drivers so you
                can easily replace them after installation or upgrade.
If
                you have a laptop, looking for drivers will be as easy as opening your
                browser and searching your computer model number with added word
                „drivers”. The first two results will probably be your computers
                manufacturer website support page of your particular laptop model, in
                which you can find proper drivers for your laptop.
            
                1. There should be a sticker on your laptop with manufacturer and
                model number information (probably on the bottom of your laptop)
2.
                You can run DirectX Diagnostic Tool in your Windows and find your
                exact model number in there
In order to do that you need to
                open your START menu and in the search box type in
                „dxdiag” (without the exclamation marks) and hit enter.
Or
                you can go to START menu and click on „Run...” and
                type „dxdiag” there.
(here is an example of the dxdiag
                window on a Dell computer)
            
 
             As you can see under „System Manufacturer” and „System Model” there is
                information that you need. If you have a DESKTOP it
                may show a model of it but if it is not manufactured but assembled you
                will only see your Motherboard manufacturer and model number.
            
                If your computer meets required computer specifications you will be
                able to install Windows 7 on your computer however it will not be a
                direct upgrade and it will require a custom installation which will
                delete your existing programs and may remove all of your files (if you
                choose to install on an existing partition all of your files will be
                moved to windows.old folder). In this case, we recommend a clean
                installation which will wipe everything from the hard drive.
You
                will need to backup all of your valuable data before attempting
                installation.
Make sure that your computer has a DVD
                drive or can boot from USB, if it doesn’t you won’t be able to perform
                this installation
            
                Yes, you can, however, if you want to perform a direct upgrade which
                will keep your files and programs intact you need to keep in mind that
                you can only do so through specific upgrade paths. Please refer to the
                table below:
            

                If you would like to switch editions then you will need to perform a
                clean installation which will wipe everything from the computer.
            
                If your computer meets required computer specifications you will be
                able to install Windows 8.1 on your computer however it will not be a
                direct upgrade and it will require a custom installation which will
                delete your existing programs and all of your files. In this case, you
                can only perform a clean installation which will wipe everything from
                the hard drive.
You will need to backup all of your
                valuable data before attempting installation.
Make
                sure that your computer has a DVD drive or can boot from USB, if it
                doesn’t you won’t be able to perform this installation.
            
                If your computer meets required computer specifications you will be
                able to install Windows 8.1 or 10 on your computer however it will not
                be a direct upgrade and it will require a custom installation which
                will delete your existing programs and all of your files. In this
                case, you can only perform a clean installation which will wipe
                everything from the hard drive.
You will need to
                backup all of your valuable data before attempting installation.
Make
                sure that your computer has a DVD drive or can boot from USB, if it
                doesn’t you won’t be able to perform this installation.
            
                Yes, you can, however, if you want to perform a direct upgrade which
                will keep your files and programs intact you can only do so through
                specific upgrade paths. Please refer to the table below:
            
