IT tech support here. sounds like malware, depending on which infection (almost irrelevent not days unless its a band new one that just came out) it could be tough to remove without assistance. now there are so many tools made to remove the infections, i second the download and run malwarebytes anti-malware (Mbam), you dont need to use the free trial or purchase it for the realtime scanner, just install, let it run a quick scan (depending on how much stuff you have can take 5 minutes to a half hour.. longest i have had it take was 3 hours with a computer using 4 terabytes of storage space), and it will list what it can find. then check what you want removed and it may ask you to restart your computer, allow it and it will finish and should remove the infection. if not there are a few forums out there that offer good tech support for free (not sure ECF wants me to say which ones, or offer tech support on here, so ill leave my comment off here).
Thanks! I just ran a scan, and two pieces of malware were found. A bit frustrating because I now have 3 forms of antivirus. Avast (paid version), Microsoft Essentials, and Malwarebytes. Each program found multiple things that the other missed. Makes me wonder if anything else is lurking. Thanks guys!