Suggestions are as follows:
Adding a solid state hard disk can improve the system startup speed, and the performance when running can also be improved a little. Memory 4G is usually enough, if you usually play fewer games. The reason why your computer is stuck is probably because of the system, so I suggest you reinstall the system first, and then consider whether to add memory or a solid state drive. If the reinstallation of the system is still stuck, there is no need to upgrade. If the system reinstallation is still stuck, the hardware is aging and you should consider replacing the computer. If reinstalling the system doesn't make it worse, add RAM if you're short on RAM, or replace the SSD if you're slow to boot.
Memory sticks:
Memory sticks are computer components that can be addressed by the CPU through the bus and read and written to. Memory sticks used to be an extension of the main memory in the history of personal computers. With the computer software and hardware technology constantly updated requirements, memory sticks have become read and write memory as a whole. We usually say the size of the computer memory (RAM), that is, the total capacity of the memory stick.
Solid State Hard Disk:
Solid State Hard Disk (Solid State Drives), referred to as the solid disk, solid state hard disk (Solid State Drive) with solid-state electronic memory chip array and made of hard disk, by the control unit and storage unit (FLASH chip, DRAM chip). Solid state hard disk in the interface specifications and definitions, functions and methods of use and ordinary hard disk is identical, in the product shape and size is also completely consistent with the ordinary hard disk. It is widely used in military, automotive, industrial control, video surveillance, network monitoring, network terminals, power, medical, aviation, navigation equipment and other fields.