I have classed your issue as having "Adware" on your System and I shall guide you to removing it however I will need more information before being able to do this. Firstly, what OS are you using (and is it 32-bit or 64-bit)? Secondly, when did these issues start and do you remember a list of websites to where they started from. If yes, replace "http" with "huup" in the domain so people don't come on this forum and click them and also get infected, but just so I can maybe do some analysis on them and the files on that site :)
With that, do you use a Antivirus/Anti-malware product, and if so, which one?
^ Answer those and I will help you best I can with removing this adware.
Why would you use an operating system that gets malware in the first place?
Only Microsoft users have to install malware programs, anti virus programs, spyware programs, registry cleaners, defrag, firewalls and all that other garbage needed to keep microcrap running.
Get Linux which is FREE and you dont have to use any of that junk. Not only is Linux free, but it is more stable, more secure and easier to use...