Internet connection problem

Yesterday there was a thunderstorm so I unplugged my computer and my router. Now if I want to connect to my router using Debian I get a "connection failed" message. If I use Windows 7, which is installed as dual boot using GRUB because I need it for school or my cellphone via WiFi, I still can connect to it. Any ideas, what the problem could be?

hello

surmtimes internet wireless routers fail for a while. Either wait at MOST an hour while restarting the modem. OR call the company. It shouldn't be permanent.

Also thunderstorms.

Either wait at MOST an hour while restarting the modem. OR call the company. It shouldn't be permanent.

Have you tried to give your machine a static IP from the router?  I am sure when you installed Debian,  it configured itself for a static IP.  When you reconnected to your router,  it is issuing a Dynamic address.