Hello, I am idling at 35-50 on my i7 4790k cpu and in game 70-86 and on prime95 test my temps went as high as 90-100. I did not change my thermal paste for 6 years and I was told by the technician it could be my thermal paste he said hes about %80 sure. Do you think it could be my thermal paste? Also when I go to remove the heat sink and re apply the thermal paste what should I do to cut off power from psu. Should I just unplug it from the wall or do I need to do more? My friend told me unplugging it from the wall will be sufficient but I read some places you should unplug power from the motherboard. I am sorry I am not a very smart person and computer stuff is confusing for me any help will be greatly appreciated <3... My computers build is a i7 4790k gtx msi 970 16gb