Q: Wi-Fi connection breaks all of a sudden while still being shown as online and can't be restored

Hey, guys!

I've been having a problem with my wi-fi-connection for at least two weaks, and to me it seems as if it started with the latest OS update I installed. When I turn on my computer the wi-fi connection sets up just as usual, with a strong signal and the networks I frequently use. I can run my browser, e-mail programs and downloads just as I'm used to, everything works fine - and then all of a sudden connection is lost while the wi-fi symbol still shows full signal. When I open the menu to see what networks I can connect with, there are no networks shown by name, the signal-symbol sill having all its stripes filled.

It is neither a router or network problem, because the same happens when I'm on campus and my girlfriend has no similar problem with the connection on her MacBook (nor have I on my iPhone).

If anyone can help me to sort that out or at least to know what's going on, it would be great.

Best regards,

Max