HP EliteBook 8470p Disassembly, Fan Cleaning and Thermal Paste Replacement - YouTube
Amazon.com: Valley Of The Sun Original Graphics Video Card GPU Replacement for HP EliteBook 8540W 8560W 8560P 8570W Mobile Workstation Laptop, AMD Radeon HD 6770M GDDR5 1GB, MXM VGA Board Repair Parts :
How to force reset bios settings HP Elitebook 840 G1 or CMOS battery replacement - YouTube