: Follow the electrical path from one pin to another to find "open" circuits or broken traces.
Check Badcaps thread:
Memory slots (two SO-DIMM slots)
A for the HP ProBook 4520s is a specialized digital file used by technicians to visualize the physical layout of the laptop's motherboard. Unlike a schematic, which shows logical circuit connections, a boardview displays the exact placement of components (resistors, capacitors, ICs) and traces on the PCB. 1. Identifying Your Motherboard Model hp probook 4520s boardview