So my gf's computer has been getting a black screen every now and then and it happens mostly outside of games. The screen will turn black and the sound freezes and the comp has to be restarted cause nothing will work but all lights stay on. Now i have buiolt my fair share of comps and i was looking at the tower with all power off. Now when i went to start it back up windows loads and when it gets to the welcome screen where the little circle is spinning for the loading icon it just sits and that window spinning. Now when i put my ear at the psu it makes a clicking soun. What does this mean?