Internet issues after installing updates

Hello,

My computer installed its regular updates about a week ago and ever since, the internet has been having problems connecting. It connects to the regular router, but it is "local only" and will not fully connect to the internet. The only fix I have found for the problem is to have my landlord restart the router, which isn't the most convenient thing to do every time I turn my computer on. I have windows vista with all the standard internet-connecting programs, and I use chrome. I also have a second windows computer that is exhibiting the same problem, which runs windows 7, which also installed its updates. My roommate's computer is a Mac and is not having any problems at all.