HP 200-5400t CTO Desktop Ethernet Adapter

[jgt-nc]

Several years ago I purchased the HP 200-5400t CTO Desktop for my mother who is now 96 years old. Yesterday my sister was visiting her and had a network issue with her tablet connecting to the wireless network. I live over 100 miles from my mother and access her system via TeamViewer. Yesterday I discovered that the HP PC was connected to her wireless network rather than the wired network. I opened Device Manager and it does NOT show the Ethernet adapter. I ran Speccy and it does not see the Ethernet adapter. My sister confirmed that the PC is connected to the wired network. Because I'm over 100 miles away I cannot just pop in and see what I can find. I've never had an Ethernet Adapter fail but I  suspect it has failed in the HP system. Any suggestions as to additional troubleshooting?

The PC has been running Windows 10 x64 since it was released. I have no idea as to when the adapter failed, at this time I'm assuming the adapter has failed.

[Echo_Lake]

@jgt-nc

Thank you for posting on HP Support Community.

Don't worry as I'll be glad to help, I have a few troubleshooting steps we could try to fix the issue:  

• Step 1: Completing the network connection checklist
• Step 2: Checking the network status in the Network and Sharing Center
• Step 3: Setting advanced sharing options
• Step 4: Using Windows 10 diagnostic and troubleshooting tools
• Step 5: Reinstalling the network adapter software in Device Manager
• Step 6: Updating the network drivers
• Step 7: Using Microsoft System Restore
• Step 8: Reset your computer
  Click here: https://support.hp.com/in-en/document/c04649156 to complete the troubleshooting Wired Home Networks (Windows 10)

Hope this helps! Keep me posted for further assistance.
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