I have a problem with one of our old machines. It is rebooting at the Loading Windows 2000 screen and i can't figure about what the problem is. I changed out the hard drive and the memory. This problem happened right after a fresh install of Windows 2000. I'm sure if it is the motherboard because it is an older model than i am used to. The model is Intel #KZM-6021. Any help would be great, Thanks.