my iPad Pro will not do anything. I tried holding in the power button and then both the power button and the home button.

Connect your iPad to its Power Adapter; whist still connected to external power, try a forced-restart:

• On an iPad with a Home button: Press and hold the top button and the Home button at the same time. When the Apple logo appears, release both buttons.
• On other iPad models: Press and quickly release the volume up button, press and quickly release the volume down button, then press and hold the top button. When the Apple logo appears, release the button.

Make an appointment at the nearest Apple location to have your iPad evaluated for free.

Once the diagnostics are complete, the staff will explain your options.

Make a Genius Bar Reservation

https://www.apple.com/retail/geniusbar/

If iPad still doesn’t turn on, or if it gets stuck during start up, see the Apple Support article If your iPhone, iPad, or iPod touch won’t turn on or is frozen.

If you are still unable to resolve the issue, a visit to the Genius Bar at either your local Apple Store or apple Authorised Service Provider is recommended:

Genius Bar Reservation and Apple Support Options - Apple