New Build Working fine but squeaking at me??

[Soul_Trader]

Hey,

I've just finished building my computer and everything seems to be working fine - hence me typing this right now - BUT the computer keeps squeaking at me. I'm not sure if it is a beep but doesn't seem to have any rhythm/high-low to it.

I think it is the hard drive because when idle there is no problem. It's only when i start to do stuff that it starts. Or it may be that when I plugged the case cables into the mobo I didn't do it right because wasn't too sure about which one went where and the labels weren't too obvious.

Mobo - Gigabyte G31M-ES2L
CPU - Pentium Dual Core E5300
Bios - Award F8 2/5/2009
RAM - DDR2 2Gb
Drives - ExcelStor J9250S ATA
and ST3160023AS ATA

As I said, other than the squeaking it's working like a dream but very annoying.

Can anyone help?? Thanks alot.

[Soul_Trader]

Have established it's not the case cables. It must be the hard drive or maybe the CPU but seems to be working fine.

[Monty007]

Maybe a noisy fan?