Internet trolling me, need help

[Whenawhere]

I have similar problem for a few months: modem reboot itself or stop working and i have to reboot it manually.
Things that didnt help: Eset (working properly),Spybot (found nothing), CCCleaner (i have only few programs installed, so there is no mess in my PC), windows reinstall (win 7 ultimate), modem replacement.
I also talk about it with a few IT guys and noone had a clue. So if anyone had some advice i would really appreciate it.

PS: I have Eset firewall set as automatic, i wanted to change it to interactive (because automatic mode stops only incomming communication and not outgoing) but it caused me big troubles with FL (more precisely it cause blue screen(!) when i try to get in server selection). It doesnt effect anything else, just Disco. Any ideas?

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No, I won't update my account to enable 3rd party hosting!