The power button board is a pivotal part of your laptop's functionality, ensuring that your machine responds promptly to your on and off commands. Crafted with precision by HP, this power button board is an essential for maintaining the integrity of your HP Probook 440 G2 440 G2 PCNB 450 G2 470 470 G2 P/N 767442-001. If your power button isn’t responding or feels loose, replacing this board is usually the fix  done by chriswats IT solutions technicians.