I have a real mind blowing dilema here: I am doing a clean install on a new system using the Tyan Tiger S2460 mother board. I am using a recommended ddr register memory of 512(from the tyan site) I have two 1.2ghz amd athlon cpu's . I have one Maxtor 30.7 gig. hard drive installed and the Verto tnt2-m64 pci video card and had the Matrox G550 agp video card installed before changing to the pci card. I am booting up from a win 98 floppy start up and doing the fdisk on the drive. I then change my bios to boot from the cd-rom drive and then boot from the windows xp pro cd. I then format the drive to NTFS files and then all files from cd copy to the hard drive. Then when files are done copying, it reboots and i see a faint xp screen then I get the dreaded blue screen with a stop error code: Stop error code : 0x0000007e (0xc0000005) 0x8053a29d 0xf894d434 0xf894d134 I have received this error code no matter what I try. I have changed video cards, ram memory, check bios update, which my is the most recent bios update available, ect.... I have contacted tyan support and they do not know what the problem is either. I also went to the extent of purchasing another tyan mob s2460 while waiting on my rma to be processed on the original mob. Results are all the same. I even tried installing windows 2000 pro and receive a stop error of : 0x00000023 0x000e00c8 0xf241acdc 0xf241a934 0x8046b9e4 I guess the only thing I have not done so far is to try the only other o.s. that can be installed on this mother board and that would be NT . The O.S. cd's are OEM's and they have worked on other systems that I built most recently. I would really appreciate any assistance from anyone that can help , it has become a quest now .