Laptop RAM Guidance Needed

I’m working on a laptop-focused RAM project and need an expert who can steer me through every stage—from diagnosing current memory issues to choosing, installing, and validating the right modules. Because my exact pain point could range from troubleshooting strange crashes to simply confirming upgrade compatibility, I’m looking for someone who is equally comfortable giving technical advice, recommending specific SO-DIMM parts, and providing clear step-by-step installation guidance.

Please be fluent with common laptop architectures (DDR3 through DDR5), dual-channel optimisation, BIOS/UEFI settings, and tools such as CPU-Z, MemTest86, and Windows Memory Diagnostic; these are the utilities I expect we’ll lean on to confirm everything is running at full speed once the new sticks are in.

Your core deliverable will be concise, actionable instructions—whether via annotated screenshots, a quick screen-share, or a short video clip—that let me complete the upgrade confidently and safely. If you’ve helped others squeeze the most performance out of limited memory slots without voiding warranties, your insight will be especially valuable.