General

Try downloading and installing "Malwarebytes Anti-Malware". It's an anti-spyware scanner that works well alongside anti-virus scanners.
Be sure to ALWAYS use the "Update" tab to update Malwarebytes BEFORE you scan with it because the free version doesn't automatically update itself.

See if Malwarebytes finds and removes anything when you run it.

Also you could try running "CCleaner" to scan and clean your computer of temp files (among other stuff that wastes space on your hard drive).