The thing at the bottom of the screen says you have an excellent connection...
...sounds like you're using WiFi.
Are you able to log into your router? It is 'traditional' for the router to be 192.168.1.1 - try entering into your browser to go to
http://192.168.1.1/ and see if anything comes up.
If so - does your router report any problems with the connection? Have you experienced a recent thunderstorm? Does your phone work? (is the line completely silent?) Do you have little ADSL "filters" on your phone sockets, have you tried changing these? In fact - does your router have any blinky lights?
My router is prone to forgetting my internet login details, but that is dead easy to spot as the "on" indicator is green (unit booted okay) and the "internet" indicator is blinking orange (internet detected and synced, awaiting login). In 'normal' use, it is all-green for all the five or so indicators. Your box, similar?
If your internet seems to be working, go to the command prompt and enter:
ping www.google.comThis is what it should look like:
C:\>ping www.google.com
Pinging www.l.google.com [209.85.229.104] with 32 bytes of data:
Reply from 209.85.229.104: bytes=32 time=62ms TTL=52
Reply from 209.85.229.104: bytes=32 time=56ms TTL=52
Reply from 209.85.229.104: bytes=32 time=61ms TTL=52
Reply from 209.85.229.104: bytes=32 time=56ms TTL=52
Ping statistics for 209.85.229.104:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 56ms, Maximum = 62ms, Average = 58ms
C:\>If that works, something is likely to be upsetting your browser (recent change to your antivirus?). If it does not, it is time to find a local geek. Most internet connection problems are pretty easy to solve, but require physical presence. It may be that your router is telling you exactly what is going on, but if it says it in geek-speak...

Good luck.