So I have a problem with my spark fiber connection constantly dropping out if only for a couple of seconds but it happens multiple times a minute on my main PC which is running Windows 7. There is no problem with the wifi and other devices and I have plugged the cable directly into the laptop and there is no problem but it is running Windows 8 so I don't think it is a problem with the modem.

I think the problem is something on my Windows 7 computer but I don't know what changes I need to make to get it working properly.

Can anybody guide me with this?

Here's a screenshot of what happens, it drops off a couple times in this video but often it happens more often than is shown.

http://www.screencast.com/t/fexZf7eFu65w