Brazenly OT: ThinkPad760XL local/v/remote screen

OK, here's a an OT, I can't wait... I have a seven year old IBM 760XL Laptop somebody gave me for free with all the trimmings (with 2 different docking bays) that likes to switch over to the VGA port every time it boots completely up. The LCD panel is seen for the period right after power-on to the time the OS starts. I haven't seen LCD control in the BIOS start-up (powerswitch+F1) or in the Control Panel. I want to tell it to keep the LCD display on always. Perhaps someone has worked with this particular model? Reply to me directly, if you intuit that this is not a true list question. BTW this is mechanically a pretty interesting machine. You can lift up the keyboard and change out any of this: Batteries,spares, Floppy,CD,HD, and memory, all using no tools at all. Thanks, John A.