Can I disable or skip booting into Diagnostics Mode?

I have a motherboard from a Latitude E4310 that I'm using to control some devices. Unfortunately, it always boots into diagnostics mode because there's no power button, touchpad, battery, integrated display, etc, etc. I don't need any of those elements. Every time I power it up, it goes into Diagnostics Mode and gives me the blue screen with several errors because of the missing elements. I am forced to keep a keyboard connected and push several keys to ignore the errors and finally OK to boot. This is annoying, it forces me to have a keyboard connected and, what's worse, requires manual intervention to power up the system. You'd think there would be an option in the BIOS, a jumper on the board or something to disable this annoying test but my Google searches have turned out unsuccessful thus far. Any ideas, please?

Thanks