I use Google Chrome for my browser, no pop ups and no sites load that has a virus or spyware attached. You need a registry cleaner to get rid of most spyware. The best cleaner and tune up used by most computer fix it places is called Tune Up. You can use if free for 30 days to fix your computer and then if you like it buy it. An ex Best Buy computer guy told me use it before buying a new computer.
http://www.tune-up.com/products/tuneup-utilities/