Not really sure what to offer then it seems pretty odd. Did that memory ever show correctly and now doesn't. If it did, did it stop after a system change like a windows update or software install? Have you run a malware scan? You could from and elevated command prompt run sfc.exe /scannow and check you windows installation for corruption. You already set that laptop bios to defaults so I would definitely be opening a support ticket with ASUS. Their support is one of the better ones out there. They should be able to help you out. I suggest you ask them. They are the expert with the device they made. Some other things you can try though is booting to Ubuntu linux from a USB drive or DVD and see if the memory is not shown there correctly or not. That would at least tell if if maybe you have some weird OS corruption with Windows?
