Question They have been together for the last 11 months but suddenly my RAM sticks hate each other

[SM4SH]

I have two ADATA DRAM Modules and both of them work fine by themselves but when I use them together they don't work and I get no display.

I have:

AX4U300038G16A-SR10

AD4U2400J4G17-B

Both of them have different sizes, frequency, timings etc. Completely different modules.

I have been using them together for around 11 months now in something called FLEX MODE (AMD variant of that) and they worked fine till now.

12GB in total, 4+4 in dual channel and the rest in single channel.

I can't find out what the issue is, they both work but not together which would make sense since they are completely different modules but I have been using them for 11 months just fine.

I was hoping you guys could help me out on this one.

 

[Ralston18]

No display? Something else is going on....

Any known updates?

Update your post to include full system hardware specs and OS.

Include PSU: make, model, wattage, age, condition.