Memory in wrong DIM slots?

[Chamaco Arano]

Motherboard: MSI - B250M MORTAR Micro ATX LGA1151 Motherboard

Memory: Corsair - Vengeance LPX 8GB (2 x 8GB) DDR4-2400 Memory

 

I've had this machine for a little over 18 months working ok, I always noticed a bit of a hiccup but I thought it was because of my i5-6600k.

I realized I installed both RAM modules incorrectly, on slots 3 and 4. When I went to the manufacturer's manual it specified to use slots 2 and 4, I went ahead and changed it and the system won't POST.

 

I tried changing it to slots 1 and 3, no luck, I tried all combinations expect 3 and 4 and nothing would work.

 

Any ideas?

[Spudbilly]

6 minutes ago, Chamaco Arano said:

Motherboard: MSI - B250M MORTAR Micro ATX LGA1151 Motherboard

Memory: Corsair - Vengeance LPX 8GB (2 x 8GB) DDR4-2400 Memory

 

I've had this machine for a little over 18 months working ok, I always noticed a bit of a hiccup but I thought it was because of my i5-6600k.

I realized I installed both RAM modules incorrectly, on slots 3 and 4. When I went to the manufacturer's manual it specified to use slots 2 and 4, I went ahead and changed it and the system won't POST.

 

I tried changing it to slots 1 and 3, no luck, I tried all combinations expect 3 and 4 and nothing would work.

 

Any ideas?

You should methodically try out each dimm one at a time in each ram slot and doing memtest86 for a couple minutes each time. This will determine for sure if there is a made RAM module or bad dimm slot and which one. Ideally, both RAM modules need to be identical to run well in dual channel mode (i.e. dimm slots 2, 4 or 1, 3). Otherwise, there will be either performance issues or more likely stability issues.

 

gl

[Chamaco Arano]

1 hour ago, Spudbilly said:

You should methodically try out each dimm one at a time in each ram slot and doing memtest86 for a couple minutes each time. This will determine for sure if there is a made RAM module or bad dimm slot and which one. Ideally, both RAM modules need to be identical to run well in dual channel mode (i.e. dimm slots 2, 4 or 1, 3). Otherwise, there will be either performance issues or more likely stability issues.

 

gl

I will try memtesting tonight.

As far as the modules, they are identical. What I find interesting is that each one of them would work independent from each other, but together they'll only work in 3 and 4 and nothing else. 

[_Aontaigh_]

I would recommend you clear the CMOS, place the DIMMs in slots 2 and 4, and then attempt to boot the system.

[Chamaco Arano]

On 9/17/2018 at 11:39 AM, _Aontaigh_ said:

I would recommend you clear the CMOS, place the DIMMs in slots 2 and 4, and then attempt to boot the system.

I followed your instructions.

When placing the 2 old sticks in 2 and 4 the system wouldn't post.

When placing the 2 old sticks in 1 and 3 the system wouldn't post.

I purchased another kit (exact same kid, 2x8GB @ 2400MHz) and it's behaving the exact same way. I tried putting in the new RAM in slots 1 and 2, while keeping 3 and 4 with the old sticks, but the system won't post either.

[_Aontaigh_]

2 hours ago, Chamaco Arano said:

I followed your instructions.

When placing the 2 old sticks in 2 and 4 the system wouldn't post.

When placing the 2 old sticks in 1 and 3 the system wouldn't post.

I purchased another kit (exact same kid, 2x8GB @ 2400MHz) and it's behaving the exact same way. I tried putting in the new RAM in slots 1 and 2, while keeping 3 and 4 with the old sticks, but the system won't post either.

 

Did you first clear the CMOS?

 

It can be found in the manual for your board here: https://www.msi.com/Motherboard/support/B250M-MORTAR#down-manual

 

[Search: JBAT1: Clear CMOS (Reset BIOS)]

[Chamaco Arano]

Yep, the motherboard is faulty.