Hi I have a 915GAV board based PC with PIV HT 2.83GHz system. The PC has a IDE Seagate 80 GB Hard disk, IDE LG DVD RAM with SATA Seagate 320GB Harddisk, SATA Samsung DVD RAM. The PC has 1GB DDR 400 RAM. WindowsXP with service pack3 is installed. The PC is quietly working for the past 5 years. But suddenly for the past few weeks, if all above drives are connected i get Bios Error 106. At that time, All disk drives are detected in the disk details of CMOS but SATA Seagate Harddisk is not reported in Harddisk list of CMOS. If I removed 320GB SATA Harddisk, the system boots but runs very slow. If I removed the SATA Samsung DVDRAM, the system boots faster with IDE drives only. Similarly if I removed IDE drives, the system boots with SATA drives only. There is no conflict in Master Slave settings or booting order settings of drives in CMOS. All are correct only... What is the problem with my PC?