Boardview files are often shared on repair forums like Badcaps.net , Vinafix , or RevSpace . You will likely need to register a free account and may have to make a few posts before downloading. Always scan downloaded files for malware.
The HP ProBook 4540s Laptop takes the DDR3 PC3-10600 1333MHz SODIMM memory type, and comes installed with 4GB memory. MemoryStock hp probook 4540s boardview
A very specific request!