Weird problems with internet on a single computer

Okay so for the past 2 weeks now I have been having very weird problems on a single computer in my household (my personal Desktop) to where my web browser and battle.net will just stop loading webpages for 2-6 minute periods, but my skype/video game connection to servers will be okay. I checked it with multiple browsers, cleared cache and it still has this odd problem.

If you need any other information feel free to ask

 

Using newest version of firefox as my main and used chrome to test this problem also

 

no other computer or device on my network has this problem.