Device not found.
Device not found.
I possess a 12GB storage, 8GB DDR3 HyperX 1866MHz and another 4GB DDR3 HyperX 1866MHz. In the BIOS both devices are recognized but only the latter is listed in slot 1. Checking This PC properties displays (12GB RAM, 7.94 usable) matching the Task Manager under Performance. Removing the 4GB unit from slot 2 still shows (8GB RAM, 7.94 usable). Moving the 8GB RAM to slot 2 gives (8GB RAM, 7.94 usable) and transferring it to slot 1 also yields the same numbers. It seems the DIMM slots are functioning correctly. Running a Windows Memory Diagnostic found no issues. Resource Monitor shows a 4GB memory allocation in Hardware Reserved—could that be the issue?
However, only a few months ago it displayed 12GB of RAM. Now I’m not sure what changed.