The Palmrest: http://www.tech505.com/sites/default/files/laptop-parts-name-2.jpg
http://shopbuy.org/static/category/original/laptop-parts/Cheap-Laptop-Parts-1.jpg
Sounds like you butchered a Bios update..
Follow the guide on the official HP website and hopefully you can recover: http://support.hp.com/us-en/document/c02693833