8.1 GB of memory available out of 16 GB is marked as reserved hardware.
8.1 GB of memory available out of 16 GB is marked as reserved hardware.
You're experiencing issues with dual RAM configurations on your PC. The system responds by a specific sequence when you power off, which suggests it's managing the memory layout correctly. The Memory showing 8.1GB as System Reserved might be due to how the BIOS or OS handles the installed modules. You don't necessarily need identical RAM speeds and timings; modern systems can handle different configurations as long as they're compatible. Consider checking your motherboard documentation for supported configurations and ensure both RAM sticks are properly seated.
You're not right about the timing. The speed will match the slower module, but they don't have to be the same. @Jaasskk check your motherboard manual to confirm both sticks are placed correctly. Take them out and reinsert them properly.
Optimal approach is to adjust UEFI settings manually, setting both RAM speeds to the lower of the two options. Change your system to run at 3000 MHz with clock speeds 16-20-20-38. This may cause a slight performance drop due to downclocking the faster pair slightly, but it should function properly.
Occasionally a transparent CMOS and a memory repositioning can resolve the issue
I understand that adjusting speeds works well, but mixing times can be tricky.
Typically, when a system includes an integrated graphics card, it uses some of the RAM, which isn't ideal. However, 8GB is usually too much for that setup. If you have both an integrated graphics card and a discrete GPU, consider disabling the integrated one in the BIOS settings.