I finally got it to connect to my network (it was an adapter setting), but the computer would still get online. I dropped to a command prompt and saw the machine was using a self-assigned IP address. That's no good.
When I tried to renew the IP, I got an error: "The RPC server is unavailable." After searching for a while, I came across several back-up related forum posts about the error. None of those applied. Start again.
I searched around some more, changing the terms a bit, and came across a post with people having the same problem. Okay, getting warmer.
One suggestion was to run sfc /scannow. That usually cures system file issues, but it did nothing for this situation. However, one of the comments to the article had exactly what I needed!
I looked in SERVICES and saw that DHCP Client was not started. When I tried to start it, I got another error: 1075 Dependency is not loaded. The fix is actually pretty easy:
"Just delete the registry entry and reboot the system. It should work just fine. it worked for me.
- Click Start,
- click Run,
- type regedit in the Open box,
- and then click OK.
- In Registry Editor, locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Dhcp
- Right-click the DependOnService entry,
- and then click delete.
- Click OK enough times to get out.
- Reboot the computer."
That worked! Once I rebooted, the computer and it (eventually) found my network and connected. Whew!
Hope this helps someone else.