How to find the computer's bit count
One quick way to tell if you're running a 32-bit or 64-bit version of Windows is by looking at information about your operating system installation in Control Panel.
Begin by downloading the correct version of iTunes for your computer.
1. Launch your favorite web browser from the Start menu, taskbar, or desktop.And Navigate to https://www.apple.com/itunes/download/.
2.Click Download Now.
3.Click Save. iTunes will now download.
4.Click Run when the download is complete. The iTunes installer will open.
5.Click Next.When the installer begins running, you'll have to agree to run it and then go through a few screens of agreeing to iTunes' terms and conditions. Agree where indicated and click the next/run/continue buttons.
6.After agreeing to terms and proceeding through the initial, basic steps of the installation process, iTunes will ask you to choose some installation options. When you've made your choices, click the"Install"button.
7.make sure The "Open iTunes after the installer exits"option has been selected and click "Finish" .
Now that you have been installed successfully.
