NO post after adding two more RAMS of the exact same type

[SuliTM]

Hi everyone,

 

I have just bought new RAMS to add to my PC. The previous ones that I had were DDR4 2x8 GB with 4000 MHz and I bought exactly the same product and installed it on my PC, so now I should have 4x8 GB. However, after installing the rams, when I turn on the PC I got not Post and the DRAM red light on the motherboard turned on. I removed the newly added rams and only kept the old ones and I got post and it I recieved a message that the settings will be set to the default settings. After that, I turned off the PC and inserted only one of the new rams and I got post. Then, I turned off the pc and inserted the other new one and I got no post. After that whatever I try I always get no post. Could anyone please help me out?

 

My PC build:

 

MSI MPG X570 GAMING EDGE WIFI Motherboard

Ryzen 7 5800x

RTX 3080

Previously: DDR4 2x8 GB with 4000 MHz New: DDR4 4x8 GB with 4000 MHz

M.2 and HDD

850 W gold power supply

[Mark Kaine]

Just because its the "same product" doesn't mean its the same die, might not even be the same manufacturer. Check the part numbers if they're really the same.

 

 

[RAS_3885]

4 minutes ago, SuliTM said:

After that, I turned off the PC and inserted only one of the new rams and I got post. Then, I turned off the pc and inserted the other new one and I got no post

Was this at the stock RAM speed or at 4000 MHz DOCP?

[SuliTM]

3 minutes ago, Mark Kaine said:

Just because its the "same product" doesn't mean its the same die, might not even be the same manufacturer. Check the part numbers if they're really the same.

 

 

I reordered the rams from Amazon and if you mean this "‎CMW16GX4M2Z4000C18" by the part number they are the same and it is written on the box of both products. Also, both of them were made in Taiwan, I am not sure if this is what you mean by the part number or not.

[SuliTM]

6 minutes ago, RAS_3885 said:

Was this at the stock RAM speed or at 4000 MHz DOCP?

Before adding the new RAM it was at 4000 MHz. I did that by the BIOS when I first built the PC.

[Mark Kaine]

1 minute ago, SuliTM said:

I reordered the rams from Amazon and if you mean this "‎CMW16GX4M2Z4000C18" by the part number they are the same and it is written on the box of both products. Also, both of them were made in Taiwan, I am not sure if this is what you mean by the part number or not.

Yeah, that's what I meant,  sounds like its the same kit then.

You could try loosen timing or speed a bit, it might be too much for the memory controller.

 

 

[RAS_3885]

3 minutes ago, SuliTM said:

Before adding the new RAM it was at 4000 MHz. I did that by the BIOS when I first built the PC.

I meant after you added the new RAM did you re-set the DOCP profile to run at the higher speed? If so, 4000 MHz may just be too much for four sticks on your motherboard. That's a pretty decent RAM overclock.

[Mark Kaine]

8 minutes ago, RAS_3885 said:

I meant after you added the new RAM did you re-set the DOCP profile to run at the higher speed? If so, 4000 MHz may just be too much for four sticks on your motherboard. That's a pretty decent RAM overclock.

Agreed, but I just looked it up this ram is rated for 4000mhz, although it still might be too much for the memory controller, hence loosen timings a bit might help (its also really cheap corsair ram, which *doesn't* help lol)

 

12 minutes ago, SuliTM said:

Before adding the new RAM it was at 4000 MHz. I did that by the BIOS when I first built the PC.

So look, as per above try looser timings and maybe 3800mhz,  the thing is ryzen doesn't like 4 sticks , and above certain speeds it becomes even more difficult. 

If that doesn't work I'd return the ram and buy proper b-die,  you really gotta think this "4000mhz" ram cost the same as my gskill 3200 Samsung b-die,  why is that (probably because it's low quality,  and mixing kits even with the same numbers isn't guaranteed to work)

[SuliTM]

22 minutes ago, Mark Kaine said:

Yeah, that's what I meant,  sounds like its the same kit then.

You could try loosen timing or speed a bit, it might be too much for the memory controller.

 

 

How could I do that if I don't get POST? Because I am not sure how to run BIOS without a post. Could you please help me with that. And thank you all for the help

[SuliTM]

20 minutes ago, RAS_3885 said:

I meant after you added the new RAM did you re-set the DOCP profile to run at the higher speed? If so, 4000 MHz may just be too much for four sticks on your motherboard. That's a pretty decent RAM overclock.

After I installed only three rams sticks, I checked the BIOS to see if everything was working correctly and I noticed that the speed was set at 4000 MHz, although before that the settings were set to default which was at about 2600 MHz. So that might be similar to what you mean, however, I didn't change profile at a higher speed manually after adding the new rams.

[Mark Kaine]

14 minutes ago, SuliTM said:

How could I do that if I don't get POST? Because I am not sure how to run BIOS without a post. Could you please help me with that. And thank you all for the help

Oh, yeah, thats true, did you try to reset CMOS?

 

Unplug the pc from power 

Remove the little battery on the mobo,  wait 20 minutes (yes, seriously) 

Press the front power button for 30 seconds (yes)

Then put the battery back and try to boot.

 

Technically you need to do this every time you change anything in the ram configuration. 

[SuliTM]

7 minutes ago, Mark Kaine said:

Oh, yeah, thats true, did you try to reset CMOS?

 

Unplug the pc from power 

Remove the little battery on the mobo,  wait 20 minutes (yes, seriously) 

Press the power button for 30 seconds (yes)

Then put the battery back and try to boot.

 

Technically,  you need to do this every time you change anything in the ram configuration. 

Thank you so much I will try that and update you with the results.

[-rascal-]

32 minutes ago, SuliTM said:

Thank you so much I will try that and update you with the results.

 

See if you are able to get ALL 4x sticks working first, even if at default DRAM speed/settings (i.e. DOCP disabled).

No point trying to get them to run with full speed, and potentially chasing after your own tail, if the problem is because of a faulty RAM stick.

 

Keep in mind, DDR4-4000 is a pretty aggressive overclock / DOCP / XMP.

And having 4x sticks VS 2x sticks is harder / more stressful on the CPU's Integrated Memory Controller (IMC).

 

E.G. you might not be able to get DDR4-4000 working with ALL 4x slots; you may need to dial it down a bit (i.e. DDR4-3866 or DDR4-3600).

Or perform some manual DRAM tweaking / overclocking.

[Mark Kaine]

57 minutes ago, -rascal- said:

See if you are able to get ALL 4x sticks working first, even if at default DRAM speed/settings (i.e. DOCP disabled).

Yeah, true,  I was expecting op to do that first after resetting CMOS, but its a good idea to point that out. 

[SuliTM]

4 hours ago, Mark Kaine said:

Oh, yeah, thats true, did you try to reset CMOS?

 

Unplug the pc from power 

Remove the little battery on the mobo,  wait 20 minutes (yes, seriously) 

Press the front power button for 30 seconds (yes)

Then put the battery back and try to boot.

 

Technically you need to do this every time you change anything in the ram configuration. 

I have rested the CMOS and I got the same problem. Even if I used only the old rams alone, I got the same problem no Post. 

[Mark Kaine]

11 hours ago, SuliTM said:

I have rested the CMOS and I got the same problem. Even if I used only the old rams alone, I got the same problem no Post. 

I'm a bit stumped then and not sure how to solve this tbh, cmos reset *should* have fixed it, especially with just old ram.

How long did you wait before putting the battery back?

[SuliTM]

On 12/1/2021 at 6:19 AM, Mark Kaine said:

I'm a bit stumped then and not sure how to solve this tbh, cmos reset *should* have fixed it, especially with just old ram.

How long did you wait before putting the battery back?

I have waited about 20 minutes. However, I have then tried every ram stick and tried different configuration until I noticed that one of the slots didn't work, so I tried to install three rams in three slots without the one that I was suspicious of being not working. After that I got post and in the screen it showed that there was a CMOS reset and the settings can be set to default. I did that, then I installed the last ram, and finally I got post and the PC worked fine. I really appreciate your help and without you guys I wouldn't have fixed that in my home by myself. Thank you so much to everyone that helped me!