Good Day Kelewd,
I appreciate your time getting back to this thread, have you tried to perform the System Restore? if not, please do so and let us know the results.
If the issue persists, perform Repair Upgrade, it will repair and replace any corrupted system files.
Step 1: Download Media Creation Tool from Microsoft.
https://www.microsoft.com/en-us/software-downlo...
Click “Download Tool Now”
Step 2: Run MediaCreationTool.exe.
Step 3: Choose "Upgrade this PC now".
Step 4: Select "Keep personal files and apps".
Step 5: Let it install
Once done restart and try to download the Realtek driver from the manufacturers website.
Have a wonderful day ahead and stay safe.
Sincerely,
Carlo T.