Hello Guys. I am using an old PC Chips M938LU SiS 650GX 400/533 FSB 478 socket motherboard. Intel Pentium 4 3.06 GHZ 512 533 SL6PG Hyper Threading, 2GB PC3200U memory ram, AGP MSI FX 5200 video card, 450w PSU. The system is running normal. The thing is that when I enable the hyper threading on the bios, the system boots on a black with vertical red lines' screen. I have to clear the bios on the motherboard with the three pins to restore the system. This is would definitely take advantage of the hyper threading technology. Please help!!