Hello, how much time are you waiting from boot, before powering down (due to the white led with nothing else) ? Because it will definitely retrain all the ram and can take a little time

Hi @mazzinia_​ ,

I will say I was waiting for 15 or 20 min. Should I wait more?

Thanks in advance.

@mazzinia_​ 

Anyway, I let the machine on all the night. Tomorrow: no boot. :(

@Abidal​ no, should not take more than 30 minutes and that's with a lot of ram ( I think ). If you go back to the working configuration ( ram ) you had before buying the new modules, does it work ?

Yes, it boots with old 16Gb sticks.

I changed the CMOS cell also, no boot.

So, now has 4 x 16gb , and you got 8 x 32gb dimms.

Lets maybe find out if they are working ... it should work with just 1 dimm in the first slot of cpu0 (you can test this with your 16gb dimms) , so the thing would be checking if it boots with each one of the new dimms

@mazzinia_​ 

I will try with one RAM.

But as I saw in user manual, there is no config with 1x 16G per CPU.

Anyway, I will give it a try and let you know.

Thanks .

@mazzinia_​ 

Hi,

So, I trued :

1x8Gb in Dimm1/CPU1 - No RAM in DIMM1/CPU2 -> It boots

1x16Gb in Dimm1/CPU1  No RAM in DIMM1/CPU2 -> It boots

1x32Gb in Dimm1/CPU1  No RAM in DIMM1/CPU2 -> RAM error (Amber led)

1x32Gb in Dimm1/CPU1  1x32Gb in DIMM1/CPU2 -> No boot (Solid white led)

I changed 16Gb RAM sticks , same result

Any idea?

Thanks.

I have a T7810 with 8x16Gb RAM with 2xCPUs.

I want to pass to 8x32Gb RAM, but the machine wont boot once RAM plugged. It remain in solid white led, but no boot.

CPU: 5-2643 V4

RAM: M393A4K40BB1-CRC ( I tried also HMA84GR7AFR4N-UH)

Bios: A34.

Many thanks in advance.

The RAM I'm using are all RDIMM, and all sticks are the same reference (M393A4K40BB1-CRC), so same rank (2Rx4), and same frequency (2400T).

Bios is at its latest update (A34). 

Thanks.