Back from my holiday

After 2 weeks of holiday, my router started doing weird (The power was off for those 2 weeks for my router and modem). After 1 minute of connection it crashes (I think). The internet completely stops working and I have to turn the router off and on again to get a connection for 1 minute. The weird thing is, wi ndows says i'm connected to the web. The internet singal I use is not wireless.