So my computer did this twice now within like a week or two. The computer randomly shuts down but only partially. The computer monitor would shut off so would the keyboard but the mouse would stay on and so would the tower light but it sounds like its powering down. I would sit their the monitor wont come back on or anything and the computer sounds like its running in sleep mode or something buts it is not. I hold the button to turn it off but it wont shutdown all the way. In the end I have to turn it off by the back switch. I then went to turn it back on but like half the pc turns on (tower light but no montior or keyboard). My cpu tends to get a bit hot (80c) because of the bad stock fan but its only about a month old. Please help, Does anyone know what the problem could be?Should I get a new cpu fan?