Before touching any components:
Q: How do I remove the bottom panel of the HP ProBook 450 G0? A: Use a plastic pry tool to gently pry the bottom panel away from the laptop's chassis, starting at the edge of the laptop and working your way around. hp probook 450 g0 disassembly
Check the ribbon cable orientation – the blue stiffener should face up, and the connector must be fully locked. Also ensure you didn't tear the cable. Before touching any components: Q: How do I