Can't connect to wireless from laptop

I have two laptops at home. I can connect to my wireless network through my laptop #1. Till last week, I could connect to my wireless network from my laptop#2 but since then, there is a problem. From laptop #2, I now get only 'limited or no connectivity' to my wireless network. Strangely, I can connect and get a strong wireless connection when I connect to other public wireless networks from laptop#2. Not sure what is going on. Please help!