Hi Jeffmcd28,
Thank you for reaching out to Microsoft Community.
Please follow these steps first to troubleshoot the issue and to try to turn your Surface Book on:
1:Wake the display
Plug in the power supply and confirm that the tip/LED is lit
Press these keys simultaneously: Windows key + CTRL + Shift + B
You may also use the Volume up and down buttons by pressing them at the same time in 3 quick successions
2: Remove all extra peripherals
Leave the Surface plugged in and confirm that the tip/LED of the charger is lit
Remove all other peripherals including SD cards, USB drives and etc.
3: Force Shutdown
Press and hold the Volume-up and Power button at the same time for 20 seconds
If still the issue persist, please try step 3 again while you plug the power supply on the second charging port of the Surface Book (located at the bottom of the screen) since you are able to disconnect the clipboard/screen from it base.
If still the device is not turning on, please contact support through our Global Customer Service phone numbers to check for replacement options available for your Surface Book.
If this answer your question, we highly encourage you to inform our Community by clicking on Yes or marking my post as an answer. This will help other members who may have the same issue as you. Otherwise, don't hesitate to update us so we can further assist you.
Kind Regards,
Marrion Y.