Hi, Larry Roach
Windows 10 does not include a built-in Windows 7-style Start menu. If you had one previously, it was likely provided by a program such as Classic Shell or Open-Shell, and that program may have been disabled, reset, or removed.
Here are some suggestions you can try:
Press the Windows key, type Open-Shell Menu Settings or Classic Shell Menu Settings, and open the matching result.
Select Windows 7 style, then select OK. Open-Shell includes Classic, two-column, and Windows 7-style menu choices.
If no settings app appears, open Settings > Apps > Apps & features and check whether Open-Shell or Classic Shell is installed.
If it is installed but does not start automatically, open Task Manager > Startup and enable its Start menu entry, then restart the computer.
If it was removed, it is recommended that you reinstall Open-Shell only from the official Open-Shell project. Avoid registry changes claiming to restore the Windows 7 menu, since Windows 10 has no supported built-in switch for that layout.
Thank you for your patience in reading, I hope this information has been helpful to you.
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