The title says it all. Hasnt been going on for long though. Just last Sunday. At first I thought it was a fan on something, but I started it up a few minutes ago and it took a long time to load up Windows
I'm thinking, and tbh I hope I'm wrong (never usually am though ) that one of the hard drives is on its way out.

Consensus?

Memorise the beep and check the mobo website/manual it might list them

If its just one long beep it is probably either jammed fan (cpu or otherwise) or harddrive failure...