Help connecting laptop to Wi-Fi?

I just got time warner cable internet. The day I first set it up(1 week ago) I was able to connect to it. So far, my roommate and my iPhone have been able to connect just fine to the Wi-Fi. But for my laptop, it refuses to let me connect. My laptop is a year old, hp, and has windows 8. I've tried being right next to the router, and still nothing. I'm able to connect to Wi-Fi at school, and I'm able to just plug the Ethernet cable into my laptop to use the internet. I've scanned for viruses and there was nothing. I have also tried to restart my laptop, and turn on an off airplane mode. What is a possible solution to this problem?

Go through this Wi-Fi troubleshooter from microsoft http://windows.microsoft.com/...=winxptab1

When you cannect using Wi-Fi try to right click the Wi-Fi logo then hit troubleshoot and the computer shall fix it depending on the Wi-Fi used

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