My windows 8 Lenovo won't connect to the internet?

I have a 6 month old Lenovo idea pad with windows 8. It's had a history of not connecting to the internet, as it only worked at a certain spot in my school that has a strong signal. However, it has always worked at my house. I left the computer shut down for 3 days, then went turned it on and the internet worked. I kept using it until it died, and the next morning I turn it on and it won't connect to my home network which it says has a strong signal. I updated and restarted and the internet is working on different computers. How can I fix this?

Maybe the drivers are broken, or the Wi-Fi adapter is broken inside the pc, bring it to the store where you got it, if it's 6 months old, the warranty is probably still intact.

May be the Wi-Fi adapter is broken inside the pc. Try here

All Laptops by default are Limited Access on the Wireless. You have to make that a permanent connection. Open Network connections, then open the properties of the Wireless and check enable. Close the menu's and reboot. The wireless connection will be a permanent connection when ever you boot the Laptop. Most people don't know this about Laptop Computers.