Hello and welcome to justanswer, My name is ***** ***** i will be assisting you today,
I'm sorry about the issue, You can download or buy tune up from this link : http://www.tune-up.com/
you want to run Malwarebytes, a free malware/virus scanner. Please click https://www.malwarebytes.org/mwb-download
Please Update and then run a Quick Scan and Delete any Malware/Viruses.
Hope this help
If you have a moment please rate my service by clicking on one of the faces below, positive ratings are appreciated. if you still need help, please reply back to me and i will gladly continue to help you