Respuesta :
The RAM may not be recognized because the hardware may not be compatible either with the operating system or the computers BIOS.If your BIOS expired years ago,that means there is not a compatible RAM that can be found easily.If you want to,you must go to amazon.com or an online store that supports old-year electronics.Also,check your BIOS settings to make sure you have BIOS Visibility turned on.
You will need to check the seating and make sure you installed it correctly. Next, you can check if it’s compatible with your motherboard. If so and it is indeed installed correctly, you should clean the electrical contacts, make sure it is installed properly once more, and run a diagnostic test. If it is still not working, you might have a faulty unit so you will need to take it out and test it with another system.