Question Asus Prime X470-Pro suddenly stops posting when using two memory modules

[Tra1de]

I have two sticks of memory I've been using since 2017, 1x8 Vengeance LPX @ 2400 and 1x8 GSKILL AEGIS @ 2133 OC to 2400. I was running them in B1/A1 (First and Third Slot). One day I go to boot and it no longer boots, just outputing no signal to monitor. Now all I can use is my one Vengeance Module, in any slot, but I can not use anyother ram with it. I did test as well new RAM, GSKILL Ripjaw V @3600, but alas, no dice.

Time to post from power on, not even booting, has increased fourfold on the 1x8 Vengeance stick.

Mobo: ASUS Prime X470-Pro, BIOS(Up to date) Version 5406
CPU: Ryzen 5 1500X
GPU: MSI ARMOR RX 580 MK2 OC
PSU: EVGA 550W Gold
Memory: 1x8 Vengeance LPX @2400
1x8 GSKILL AEGIS @2133 OC 2400
2x8 GSKILL RIPJAW V @3600

Any help would be appreciated.

Thanks

 

[drivinfast247]

Slots A2 and B2 are to be used with a MATCHING RAM kit. So use the 3600mhz in slots A2 and B2 and discard the old RAM. With the 1st gen Ryzen you probably will not be able to achieve 3600mhz, though.

 

[CountMike]

I have two sticks of memory I've been using since 2017, 1x8 Vengeance LPX @ 2400 and 1x8 GSKILL AEGIS @ 2133 OC to 2400. I was running them in B1/A1 (First and Third Slot). One day I go to boot and it no longer boots, just outputing no signal to monitor. Now all I can use is my one Vengeance Module, in any slot, but I can not use anyother ram with it. I did test as well new RAM, GSKILL Ripjaw V @3600, but alas, no dice.

Time to post from power on, not even booting, has increased fourfold on the 1x8 Vengeance stick.

Mobo: ASUS Prime X470-Pro, BIOS(Up to date) Version 5406
CPU: Ryzen 5 1500X
GPU: MSI ARMOR RX 580 MK2 OC
PSU: EVGA 550W Gold
Memory: 1x8 Vengeance LPX @2400
1x8 GSKILL AEGIS @2133 OC 2400
2x8 GSKILL RIPJAW V @3600

Any help would be appreciated.

Thanks

That BIOS is meant for 3rd gen Ryzen with completely different memory controller placed in separate chiplet.