we have a custom built computer with 256 ddr, a soyo board with 1.7 celeron. a seagate hard drive, a 52x cdrw and a 450 watt powersupply. we are trying to install win xp pro, and when trying to boot, regardless of primary boot device or order, it comes up saying disk error, please insert system disk. then nothing. even when trying to boot from cd. any ideas? all help appreciated.