Your problem is that you have no connections. You need to check your router and firewall to see if they are blocking TCP port 8333. If they are, then that is why you aren't having any connections. With no connections, then you have no one to download the blockchain from and thus you won't be synced with the network.
Since he had connections to peers before, the router is likely to not be blocking port 8333 as he wouldn't have block source at all in the first place.Could you post the logs? If you have antivirus, try turning it off and try adding these into your console.
Code:
-addnode=82.116.203.240
-addnode=84.2.34.104
-addnode=31.170.178.235
Since you are using DSL, I suspect that the connection is unstable hence your peers keep on getting disconnected.
