I'm having trouble with what someone told me was hdd activty. Im not sure when it started but its causing serious lag issues especially when i play wow (world of warcraft). Plus there is a slight buzzing sound coming from my computer. This is a brand new computer not an old one. I ran CCleaner and it did not help. I also defragged my computer as well. How can I fix this irritating problem. I attached a pic of my system info.