Question Bad RAM Slot? Or BIOS Setting?

[GW1914]

Hello, here’s my setup:

CPU: Ryzen 7 5700X
MB: Gigabyte B550M
RAM: 32 GB XPG Spectra D35
GPU: Radeon RX 6600
SSD: 2 Samsung 860 EVOs (512 and 1 TB, respectively)
PSU: Corsair RM850
OS: Windows 11 Pro

My issue: I have two sticks of 16 GB ram installed on the motherboard. A2 works fine. But, when B2 has RAM in it as well, the computer does not post. I have exchanged the sticks between the slots, and both sticks work in A2.

I have tried to use compressed air to clean out B2, to no avail.

Normally, I would assume that that ram slot is simply not working. But B2 was working fine just a few days ago - before I had to replace a problematic CPU. Once I booted up with the new CPU, this problem is now here.

Before I RMA the motherboard, is there any other setting - say in the BIOS - that may be the culprit? Any other possibility? Thanks!

 

[Ralston18]

Check your motherboard's User Guide/Manual.

Some motherboards require that the first physically installed RAM be placed in a specific slot. DIMM_A2 being common.

Doublecheck the fine print regarding RAM - all of it including diagrams. There may be a tiny "1st" somewhere.

 

[JeffreyP55]

Hello, here’s my setup:

CPU: Ryzen 7 5700X
MB: Gigabyte B550M
RAM: 32 GB XPG Spectra D35
GPU: Radeon RX 6600
SSD: 2 Samsung 860 EVOs (512 and 1 TB, respectively)
PSU: Corsair RM850
OS: Windows 11 Pro

My issue: I have two sticks of 16 GB ram installed on the motherboard. A2 works fine. But, when B2 has RAM in it as well, the computer does not post. I have exchanged the sticks between the slots, and both sticks work in A2.

I have tried to use compressed air to clean out B2, to no avail.

Normally, I would assume that that ram slot is simply not working. But B2 was working fine just a few days ago - before I had to replace a problematic CPU. Once I booted up with the new CPU, this problem is now here.

Before I RMA the motherboard, is there any other setting - say in the BIOS - that may be the culprit? Any other possibility? Thanks!

 

[GW1914]

Check your motherboard's User Guide/Manual.

Some motherboards require that the first physically installed RAM be placed in a specific slot. DIMM_A2 being common.

Doublecheck the fine print regarding RAM - all of it including diagrams. There may be a tiny "1st" somewhere.

Thank you! From the Manuel, A2 and B2 are listed as the slots to use when only two sticks are being utilized. But, it doesn’t prioritize one over the other though. A2 works at least 🤷🏻‍♂️

 

[JeffreyP55]

The documentation from my last build, just completed. The user manual is incorrect. MSI MAG x870 wifi. DIMM A2 and DIMM B2. Would not boot. DIMM B1 and DIMM A1 worked perfectly.

 

[GW1914]

The documentation from my last build, just completed. The user manual is incorrect. MSI MAG x870 wifi. DIMM A2 and DIMM B2. Would not boot. DIMM B1 and DIMM A1 worked perfectly.

Good point! I will try that again when I get home. I was thinking that I originally tried that and it failed to post with that config as well

 

[Bob.B]

Hello, here’s my setup:

CPU: Ryzen 7 5700X
MB: Gigabyte B550M
RAM: 32 GB XPG Spectra D35
GPU: Radeon RX 6600
SSD: 2 Samsung 860 EVOs (512 and 1 TB, respectively)
PSU: Corsair RM850
OS: Windows 11 Pro

My issue: I have two sticks of 16 GB ram installed on the motherboard. A2 works fine. But, when B2 has RAM in it as well, the computer does not post. I have exchanged the sticks between the slots, and both sticks work in A2.

I have tried to use compressed air to clean out B2, to no avail.

Normally, I would assume that that ram slot is simply not working. But B2 was working fine just a few days ago - before I had to replace a problematic CPU. Once I booted up with the new CPU, this problem is now here.

Before I RMA the motherboard, is there any other setting - say in the BIOS - that may be the culprit? Any other possibility? Thanks!

If you run out of things to try remove the cpu and check the pins and sockets.