I've discovered that a Dell 926 printer, keeps my mom's Dimension 4200 from booting. If the printer is plugged in via USB, then the machine will not even post. As soon as I unplug the printer, the machine posts, and boots into Windows just fine. I have a theory that it has something to do with the built in card reader on the printer, but I'm at a loss as to how to proceed with fixing this. Is there something in the BIOS that I missed?
Update: The 4200 did not have a option to disable booting from the USB. It is in the boot order list and cannot be removed. The problem has been resolved with a new HP printer, without the usb readers and pictbridge. Works like a champ.
