From the Start Menu, type 'winver' and hit Enter. Windows 10 has received a number of major updates, but some computers fail to install them automatically. I can't upgrade to the latest Windows 10 version If you still have problems, use the Start Menu to search for 'performance', run Adjust the appearance and performance of Windows, click the Data Execution Prevention tab and turn DEP on for all programs and services, then reboot and try again.
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