First two ram slots not working on motherboard

[Kobrakai]

I've just built a new PC with an Asus Z370-A Prime motherboard and I'm unable to get the RAM to work in the first two slots (DIMM_B1 and DIMM_B2).

If I put one RAM module in either of these first two slots and turn on the PC get I no output to the screen and the orange/yellow light appears next to DIMM on the motherboard indicating a memory problem. If I move the RAM module to either of the last two slots (DIMM_A1 and DIMM_A2) then it works fine. I have 2x8GB and I am able to install them in the 3rd and 4th slots but they will not be running in dual channel that way.

The RAM I am using is Corsair DDR4 Vengeance LPX Black, PC4-19200 (2400).

I have tried it with and without XMP. I have tried lowering the speed to 2133Mhz, and I have tried pressing the button next to the error light to detect the best settings for the memory. Besides this the PC works fine and I'm using it now as I type.

[[☥] - CJ -]

Newer boards are more picky when it comes to RAM

If that RAM isnt listed on the QVL, ASUS will blame it on not being on the list.

I actually had the same issues with my sons PC that i built but with 1 stick, and thats pretty much the excuse i was given

[Bad 💀 Motha]

You should always use slots #2 and #4 anyways.
Most boards are simply marked wrong.
Most boards, the #1 actual slot is the one all the way to the right hand side.

Those QVL lists are 100% BS; so just BS your way through that.
They copy & paste those on pretty much every board that has the same chipset.
You know it works in the other slots; tell them RAM on that list did not work, simple as that.
You pretty much have to BS your way with getting most items approved from an RMA return. Otherwise most would never be passed through. As long as you have a legit reason for the RMA and it can be proven it has failed, that's really all the excuse YOU need to make a go of it.

Being as someone who does this for a living; yes most RMA I must BS my way through it, it's just that simple. If we went by their rules 100%, the game would be rigged and in their favor.

[🦊Λℚ𝓤ΛƑΛᗯҜᔕ🦊]

Bad_Motha původně napsal:

Those QVL lists are 100% BS; so just BS your way through that.

Just so you're aware, when AMD first came out with ryzen, early adopters literally -HAD- to follow the QVL list to the letter. Because in the beginning, Ryzen was so rushed and had terrible memory compatibility to the point that several people I've helped build Ryzen machines for literally had the computer not turn on at all / not even POST because the ram they used wasn't in the QVL list, some random market ram, or some older ddr4 they already had. And we'd return it and buy something off the QVL list and they were up and running. Now fast forward to today though and AMD's released bios updates that improved ram compatibility and most DDR4 in the market will work with most AMD AM4 motherboards, if they're updated. Unless you happen to buy an original AM4 motherboard that has been sitting on a shelf in some warehouse unsold since the first release of Ryzen and was never updated.. then you may not have it turn on if your ram isn't on QVL list.

So the QVL lists do serve a purpose, they're not entirely useless.

Not all companies do this, but, supposedly, the QVL list is supposed to mean that the engineers that made the motherboard from company X, literally sat down and manually tested that exact ram for that exact motherboard model # and down to even the revision of that model #. If you go to some older gigabyte motherboards on the gigabyte website and click different revision numbers of the same board, sometimes they will "Shift" and show different QVL lists entirely.