Put the iPad into Recovery Mode
Connect the iPad to a Mac or PC with a USB cable
Open Finder on Mac or iTunes on Windows or older macOS
Locate the iPad in Finder or iTunes
Choose Restore when prompted
Wait for the restore process to complete
Set up the iPad as new or restore from a backup
If Recovery Mode does not work, use DFU Mode and restore through Finder or iTunes
If Activation Lock appears after reset, enter the Apple ID and password previously used on the iPad