All: I have been having some major difficulties getting either 2000 or XP to install on a machine I am building. In both cases, I do the following: 1. Boot up my machine from 2000 or XP Setup CD 2. Setup runs, loads all its files/drivers/etc (Setup is loading files (zzzz)...) 3. As soon as it is done loading files, I get a blue screen typically with the same STOP code though I have gotten a few different ones. The STOP code when I try 2000 is ALMOST always REGISTRY_ERROR (0x00000051). The STOP code when I try XP is ALWAYS 0x0000007E. Before anyone says it, I know, I know, these are most often due to memory or hardware problems. I am pretty sure its not memory. I let memtst86 chew on my memory for a good 16 passes with no problems reported. I have run every diagnostic tool I can think of and all the tests have passed for memory, HD, CPU, etc. So I think it must be some sort of hardward problem or BIOS setting I've got munged up. Here is my system setup: MB/CPU: ------- ASUS P5A-B rev 1.03 VIO at 3.5V BUS Freq at 100MHz Multiplier at 5.5 CPU VCore at 2.2V AMD K6-2 533/MHz (overclocked to 550 since the P5A-B does not support a 97MHz FSB) PS: --- SH 250TW 250W AT power supply MEM: ---- 1 256MB LOW DENSITY SDRAM , 168-pin DIMM, non ECC, unbuffered, 3.3v, 8.0 ns in slot 1 (rows 0, 1) DRIVES: ------- Western Digital WD800BB (80GB) Ultra-ATA jumpered as primary master Samsung 52x CD-ROM jumpered as primary slave 1.44MB Floppy EXPANSION CARDS: ---------------- ASUS USB/MIR expansion plug (2USB, 1 PS/2, 1 IR) plugged into the onboard USB/MIR port Serial port plug plugged into COM1 Radeon 7000 AGP card plugged into the on board AGP slot connected to a Mitsaki monitor 3COM Etherlink II ISA card I am using the "Setup defaults" for the BIOS. The only changes I have made are as follows. - Disabled Video Shadow ROM (due to some suggestions I found on the Web when TShooting) - Enabled the onboard USB port and set the USB IRQ to "AUTO" (to support the onboard USB/MIR connector) - Changed boot sequence to CDROM/A/C - Disabled HDD Block Mode sectors (due to some suggestions I found on the Web when TShooting) Does anyone have any ideas why I can't get either of these OS'es installed on this setup? Any help would be GREATLY appeciated! Thanks, Scott

You should try first without ISA Etherlink card installed.