Acer Aspire One D225e :: Lost WiFi Connection - Can't Get Back On

I've been using my netbook at my local library for 3 years. Acouple weeks ago, all of a sudden it lost contact with the library's wifi connection. The librarian tried everything he knew, no results. I later borrowed a laptop from the library, looked up fixes, tried them, but they didn't work.

Here's what happened: Got a padlock with a window saying failed to connect to a Windows service. The dependency service/group failed to start. A troubleshoot resulted in a yellow triangle with an exclamation point in it, saying network proxy settings can't be detected, though it also says detected.

Trying the fix on Acer support--checking to see if TCP/IP is working right--resulted in an error message, TCP/IP improperly installed.
Trying rewriting the registry keys didn't work.
Ditto the remove/reinstall network driver adapter.
Finally it said if this doesn't work, there's likely a hardware problem.