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

Nov 28, 2019
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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
 
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.
 

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