So I have a few quick questions. 1.When I wake up my iMac from Sleep it always displays a white blank screen instead of my wallpaper. How can I fix this. 2.When I wake my iMac up It seems to take quite a bit of time connecting to wifi. I do not know if this is a problem with my iMac or my wifi. Anyway to check? 3. Is it bad to have an air conditioner plugged into the same power strip as the iMac? (Have not done it yet but, might need to.) Thanks!