Learn how to assemble a computer from scratch with this complete step-by-step PC build guide by Tech Master. From installing the CPU, RAM, and GPU to cable management and first boot, this tutorial covers everything you need to build your own powerful desktop PC in 2025. Perfect for beginners and tech enthusiasts looking to master PC building. #PCBuild #ComputerAssembly #BuildAPC #TechMaster #PCBuildingGuide #HowToBuildAPC #GamingPCBuild