Question Pc won't boot when Ram is in A2+B2

[Thlian]

Kingston Fury 32 (16x2) sold as 3200 Mhz CL 16-18-18. A google search says it 16-20-20 when checking the numbers on it. They clock in at 2400 Mhz. Tried to set them at XMP 1, 16-20-20 at 3200, but the pc boots back in safe mode and bios said settings needs to be set back. Then read that it's recommended to have them in alo A2+B2. Saving with BIOS default and the pc won't boot at all.
Had to set them back in A1+B1and with XMP settings 16-19-19 it boots, but clocks in ad 3000 Mhz. Still 200 short. But as mentioned, 16-20-20 A1+B1 boot error and 16-20-20 in A2+B2, no boot at all. Pc starts though and there are lights in the ram chips.

I don't think the sellers not always aware what they actually shi.

 

[KingLoki]

Does it boot ok with just one stick?
(Place it in the Dimm2 slot first to try each one seperately and check speed and timings)

 

[triplex1]

If I remember correctly, these display a dual XMP profile in the bios.

 

[geofelt]

What is the make/model of your motherboard?
What is the make/model of your ram kit?
What channels does your motherboard manual say you should install 2 sticks in?

 

[chillhouse1]

as a default for xmp: if you get issues from it, then disable it and run the RAM at its default speed, it can happen already in the xmp..