i have the ga-7vax mainboard. upto now it was running fine with a 256 Mb DDR, PC2100 module. (in first ram-slot, others empty) to lift the system a bit, I changed this module for a 1 Gb DDR 400 Mhz PC3200 module.. now Win98se starts and runs, another harddisk with Suse9.3 does so too (AND is faster), yet another harddisk with FedoraCore5 *stops* in the boot process and won't run. Live CD's with Knoppix do boot and run; Live CD's with Kubuntu and one with Ubuntu are stopping in the boot process and will not run. Before (with the old memory module) ALL were running without problems. I tested the memory module with Memtest, no problems (after 10 passes). does anyone know something useful??