How Do I Enable RAM Slots in BIOS?

Most computer motherboards have two or four slots for Random Access Memory (RAM) modules. RAM is installed in the slots, and then the modules are seated firmly into place.

The clips at either end of the slot will snap into place when the module is correctly inserted.

If only half of the RAM slots are populated, the computer will still work, but with some reduced performance. It is therefore advisable, when upgrading your RAM, to install identical modules in each slot for best performance (this also applies when adding RAM to a computer that already has some installed – add an identical module to each slot).

If you have four RAM slots and populate all of them with identical modules, you will get the best performance from your system. If you install different size modules or install modules of different speeds, your system will still work but with reduced performance.

The reason for this is that your system will be running in what is called ‘single-channel mode’. This means that data can only flow through one channel instead of two (as it would if all the modules were identical).

To enable all of the RAM slots on your motherboard, you need to go into the BIOS settings and enable them there. The exact location of this setting will vary depending on your BIOS and motherboard manufacturer, but it is usually found in the ‘Advanced’ section.

Once you have found the setting, simply change it from ‘Disabled’ to ‘Enabled’. Save your changes and exit the BIOS, and your computer should now be using all of its RAM slots.