Follow the instructions as shown in the video. Windows Embedded POSReady 7 is a Windows 7-based operating system developed by Microsoft, designed for use in point of sale machines such as cash registers, automated teller machines and self-checkouts. It succeeded the Windows XP-based Windows Embedded POSReady 2009, and was later replaced by Windows Embedded 8 Industry in 2013. It forms the base of Windows Thin PC.