Hello, thank you for reaching out to Microsoft Q&A.
Is the Wi-Fi option completely missing from the Network & Internet section?
1
Reinstall the network adapters.
Open the Device Manager.
Expand the arrow next to Network adapters.
Right-click your default Wi-Fi network driver (Intel), select Uninstall device, select 'Attempt to remove the driver software for this device' check box, then click Uninstall.
Once uninstalled, restart your computer and try connecting your desktop to your Wi-Fi router.
2
System Restore.
This option takes your PC back to an earlier point in time.
Click Windows + R key, type rstrui.exe, and click Ok.
Select the date/time you would like to restore your computer (the most recent one).
Click Finish to complete the restoration.
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If you are still having issues on your desktop,
type msinfo in the search bar on the taskbar and click Enter.
Post a screenshot of the resulting dialog box.