(SOLVED) Help me understand RAM combo and Hardware reserved memory?!

[Torsvik]

Hello 

I have 2x(2x8GB) RAM modules installed in my MSI B350 TOMAHAWK with a Ryzen 5 1600 running Windows 10 Pro 64 Bit.

first thing I noticed was Windows showing 16GB usable, then I see 16GB Hardware Reserved. (This means windows can see that there is 32GB total installed, wich is confirmed by CPU-Z showing 32768MBytes).

 

So I check my BIOS to confirm that there is 4x8GB installed, and yes it shows 4 DIMMs in use with 8GB in each. But where it shows total memory it says 16GB(16384MBytes).

This is what I dont get, why can the motherboard recognise all 4 DIMMs but not accept 32GB of RAM

 

They are all the same serial number

 

Here are som pics

[AngryBeaver]

What version of windows are you running? More specifically is it 32 or 64 bit windows?

[Torsvik]

2 minutes ago, AngryBeaver said:

What version of windows are you running? More specifically is it 32 or 64 bit windows?

Windows 10 Pro 64bit

 

Knew I forgot something  

[Warlockben]

Try running the memory diagnostic tool and see if that does anything.

[Torsvik]

16 minutes ago, Warlockben said:

Try running the memory diagnostic tool and see if that does anything.

I just ran Windows Memory Diagnostic with no ERRORS

[Torsvik]

Solved


Sorry for wasting everyones time, but after much testing I found a faulty memory module.

I just didn't think it would show up in the BIOS and/or Windows if it was faulty. I now have 24GB usable


Thanks for all the help anyways