If it is a Window OS program.
Download AVAST AV Free and then do an update of virus definitions and then a Boottime Scan after install.
If it is good then install Malwarebytes Anti-malware and do a definition update and do a full scan.
If that is good, then download and install Glary Utilities and run it.
If then that is good you might need to do a HDD Cleaning and Defrag.
Thats all I got.