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#21
On the one hand: Have you tried reinstalling the ethernet and wireless drivers? You should be looking if there's an uninstaller under Programs and Features first before trying so from Device Manager. Using DM may not actually remove the driver files - depends on how the h/w level driver was written.
On the other hand: Since NO network is showing up and Device Manager show no problem, is probably not an individual driver issue tho would still give uninstaller a shot if you haven't yet
I would next try using DISM to try a repair
DISM - Repair Windows 10 Image - Windows 10 Forums