As while back I had the subject problem and Conan suggested I needed to dowload the chipset driver. I did that and it corrected the problem.
But now I have a different mobo and again, after XP was clean installed, the problem was back.
So I went to the motherboard manufacturer's site and entered in the model # of my mobo (MX46533V by Aopen.com). Then it wanted me to select a 'category'. The categories offered were: BIOS-CIS-driver-EIG/DIY GUIDE-firmware-manual-product-image-utility. I selected driver but was told "no record found."
So do I select 'BIOS' or what?