Oh..thought I should add..
Seems it's saying one of my fans is either not working or working too slowly, but the person who worked with my computer said he tested each one and they all seemed to be running alright and at the right speed despite the error warning..
So, there's the explosion warning. Not sure which fan it could be. There's one on the CPU, three in the case itself, and of course one in the power supply and graphics card although I doubt those are the ones it might be talking about.. I know they're all at least running. I am just trusting my school's networking administrator when it comes to them all being at the right speed.