If the BIOS type can be identified, that will be a great help in knowing to how access the configuration utility; AMI is pressing delete during memory count, award is control+alt+F10, and so forth. In a message dated 3/26/01 3:07:18 PM Central Standard Time, edick(a)idcomm.com writes: << I hope you've tried the obvious, e.g. <F1> or <DEL> during the POST sequence to enter BIOS setup? The earliest PC/AT's used a setup diskette to do the setup of the CMOS-based parameters. That may prove to be a problem. To start out, I'd leave the "turbo" switch alone. However, there's usually a Turbo indicator LED that will tell you when you're in TURBO mode. If there's no TURBO button, there's probably a jumper connection available somewhere, and these connections are normally located in the lower left region of the board (assuming the power and keyboard connections are at the upper right, for reference. When you say "not available" do you mean you don't have one, or that it's not present/supported on the motherboard? I'm curious about one thing ... Why is it that you believe it to be operable at 12 MHz? Is the CPU marked as such? Can you tell anything about the support chip set? I vaguely remember something about a Morse '286 around here someplace. It's possible that there's a manual, but more likely it's a board that was hying about. I may not have it anymore, but you never know ... Dick ----- Original Message ----- From: "Mario Premke" &lt;mapr0003(a)stud.uni-sb.de&gt; To: &lt;classiccmp(a)classiccmp.org&gt; Sent: Monday, March 26, 2001 1:22 PM Subject: i286-Mainboard