My PC will randomly start beeping up a storm. It consists of a solid beep at random lengths/intervals. It'll happen out of nowhere while in windows. It happened during windows install too which makes me think it's a hardware issue. Memory?

My temps are fine, I blew the dust out but it still happens. I noticed my Antec Smartpower PSU fan doesn't spin, perhaps it's on a thermal switch? Or should that always be on? Like I said the case is cool.

Sometimes it will happen during POST, 2 seconds after I hit the power button, it will sound off a constant tone and never stop, I reset a few times and it doesn't come back.

I get no reboots, no errors, nothing out of the ordinary.