Hi. I have a high end gaming pc with i7 4770k, gtx 770, 125gb ssd with windows 8.1, 3tb hdd. MSI g45. My pc was running very slow so I tried to reinstall windows and it helped until i started playing League. Games load really slow and when they open they lag so much it is unplayable. I opened HWmonitor and saw that the temperatures on my cpu were jumping fast up and down from 40 degrees celsius to 50, i use a cooler master seidon to cool my cpu. Powers are also jumping up and down on voltage. I did run a hdd error check but all was fine. What is wrong?