Logging out of Windows will close your programs, so make sure any important work you are doing is saved. You can open this by swiping from right to left, starting at the far right of the screen. If you are already on the Start menu, skip down to Step 4. If you aren't using a touch screen, you can open the Charms Bar by placing your mouse cursor in the upper- or lower-right corner of the screen. This will open the Start screen. You can open this screen from anywhere in Windows. You can open the Start screen by pressing the ⊞ Win key if you have a keyboard connected to your touch screen device. Click your profile picture at the top of the Start screen. Select "Sign out" to close all of your active programs and sign out of Windows. Click another account name on the list to switch accounts, leaving your original account signed in.

How would you rephrase that briefly using Vietnamese?
Lưu những gì cần lưu. Mở Charms Bar. Bấm nút Start. Đăng xuất hoặc đổi tài khoản.