mechmouse: To me that sounds like a hard-disk head flicking back. I wouldn't be surprised if at least one drive is dead.
Common BIOS keys are F2 ,F8 or Del... try tapping those as the system starts to check the BIoS can see all disks.
I am assuming you are getting nothing on your monitor.
It isn't the monitor. the hard drives still work and i have tried them singularly, so unless all three have the same fault.
Rixasha: It's hard to judge from the recording but seems louder than what I would expect from a 2006 hard drive. Is there a 3.5" floppy drive, that would be my guess. Perhaps the first boot device checking for media? Are you getting anything on screen?
If you just care about the data and not the computer, it's probably easiest to pull out the drives and use an IDE (SATA?) to USB adapter to read them on a more current computer.
yeah i am getting xp on the screen, that noise happens at random during normal use then it stops (after a few seconds). also there is no floppy drive (took that out years ago). The only things in the coputer is three drives (two of them can be booted fro), a graphics card, a sound card, dvd and CD drive (not connected to the PSU) and monitor mouse keyboard
i may get a IDE to usb adapter. I just want to get the data off the drives and then I am binning the machine.
blakstar: Just to make sure, you may want to disconnect the other two HDDs, leaving only the main drive, and then see if it boots up. The beep itself sounds like a normal POST beep that occurs when everything is fine.
It got two different boot drives since I had an issue with deleting xp on one of them, so one of the is a back up boot drive (both of them make that noise)
I will get a clearer noise later today