I have a CYBERPOWERPC Gamer Ultra GUA3120A "gaming PC" and a while ago 1 of the fan's started spinning slow then eventually stopped spinning altogether. Upon inspection, I discovered that I couldn't physically force the blades to turn, as if something was blocking it. I treated it as a freak accident, replaced the fan, and moved on. However, now a second fan in a different slot is showing signs of doing the same thing. What is the cause of this, and are there any solutions that don't involve replacing another fan? The pc is about a year old and replacing fans this frequently seems odd.