The BIOS does not see the RAM
Lenovo Ideapad 310-15IKB laptop. The laptop was not disassembled, the board is original. I tried obviously working RAM, kingston and samsung. Bios InhydeH20 Rev. 5, not custom. Mechanical damage is possible, the laptop was not used by me. There are no visual defects on the board, on the RAM slot, too, everything is OK. AIDA64 and CPU-Z display full information about the additional die, Windows and BIOS do not see, they show only 4096 MB, as I understand it, soldered RAM. The RAM is obviously compatible with the motherboard. Windows Pro license is 64-bit. What could be the problem?
Solution
Replacing the RAM slot helped.
2 answers
I can assume that you have a custom BIOS update, or a Chinese motherboard. It is also possible to fake a memory module (which is unlikely, if it is soldered on the board, I assume that you have a laptop). It is also possible to damage the board / bios. There is too little information to give a detailed answer.
This happens when the OS is 32-bit. The bar will be visible, and the memory addressing is enough for a maximum of 4 GB. Install the 64-bit version of the operating system. This will allow you to use large amounts of RAM.