My wife's laptop auto updated to Windows 10 last week and everything had been working perfectly until yesterday. Suddenly her desktop/start menu reverted from the new Windows 10 start menu to the old Windows 8.1 desktop. I did some searching and supposedly if you go through control panel, appearance, taskbar and start menu properties there should be a start menu tab where you select which one you want. That tab doesn't exist on her machine or mine for that matter.
How can I get her desktop/start menu back to the standard Windows 10 style?