Buy a new antivirus, there are cheap ones such as ESET NOD32. Scan your PC, and when you play don't have programs running in the background. Such as steam,origin e.t.c. Or make sure you close your TABS in Chrome,Firefox or whatever you use. If this doesn't work then I would suggest you reinstall your windows saving stuff that you want on a USB and CLEAN EVERYTHING on your computer while resetting it.