I am trying to find somebody who ACTUALLY knows what they are talking about to help me solve this strange little issue i have been having with my PC for a while now:

Before ANYTHING even loads, within a split second of pushing the power button, my computer begins to make an extremely loud noise akin to a buzzer going off, or some kind of warning buzzer. I have double checked everything within the computer to ensure everything is wired up correctly and see no faults. I have tried looking through google a couple times but nothing I have found is the problem I seek to fix. If anybody who knows what they are talking about (i say this because I don't want my PC to be in worse condition if somebody inexperienced says something that SOUNDS like it makes sense and i try it) can help me, I would highly appreciate it since I refuse to dish out $50 an hour for some guy to probably tell me it is something simple.