Problems with fanspeed from powerunit

[hugomeeuw]

Hi,
I have a problem with the fanspeed of my powerunit. First my powerfan was turning very quiet, and after some settings in the BIOS, the powerfan is turning on max. speed ( I think). Motherboard is ASUS M2N-SLI Vista, and powerunit is ANTEC Tri Power 650 W. How can I reset this in BIOS?

Thanks.

[Duee]

I know something about this, you should try speedfan, it is free tool, monitors fan speeds, temperatures and voltages in computers with hardware monitoring chips. it is useful to me, hope helps.