Processor: Intel CeleronD 330 2.66GHz Motherboard: Asustek P4S800-MX Memory: 1 x Crucial CT6464Z40B 512mb DDR PC3200 I just assembled this system Tried to boot it with a CD-ROM drive without a disc and an unformatted harddrive. Got into BIOS and everything seemed to work fine. It found the memory, CD-ROM drive and harddrive. Then a couple of hours later I booted the system up again to go into bios and select boot from CD-ROM to instal Windows. Now, the motherboard started beeping long beeps continously, and I wouldn't get into BIOS. I tried to reset the BIOS with the motherboard jumper switch, and I was then able to get into BIOS - but now the graphics on the BIOS settings screen was sort of distorted, pixels all of the place. It wouldn't get me any further. Anyone got any idea how to troubleshoot this? What can have gone wrong? Is the most probable cause the memory? I have previously built an exact copy of this system that works just fine!