Hello All. I have a dell optiplex 320 that I can install centos5 on using pci=nomsi. That seems to be the only way. After the install grub loads but thats about as far as it gets. It looks like a BIOS bug to me, but I just don't know. I left it sit for a few minutes and it just had the echoed boot params on the screen. I've tried booting with noapic nolapic apm=off acpi=off and noprobe but can't get any farther than this. Anyone know if this thing will boot? Thanks -- Flambeau Inc. Technology Center - Baraboo, WI Email : tblader at flambeau.com Keyserver: http://pgp.mit.edu KeyID: 0x00E9EC2C