Question All ram slots individually work, but dual channel B won't boot

[Kiecam]

I've been working on trying to get a small issue of mine fixed for a little while now, and I have finally hit the point of coming to the internet for help. A few weeks ago, I randomly had 3 of my sticks of ram stop working (or so I thought), and after taking 3 of them out, leaving me with one everything started booting up normally. This was fine until I got fed up of only having 8gb of ram and I figured, hey lets pull some out of the computer beside me and throw it in, which I knew was good ram. Didn't boot. So after spending the last couple days playing with it, I've discovered all the ram I had that I thought was bad is actually fine. I have tested all of the slots individually, and they all work fine, with proper values being reported in CPU-Z, the other interesting part is that the computer will boot if I run dual channel in channel A, however anything other than that configuration, or a single channel setup causes the computer not to run. I've tried a CMOS reset, DRAM voltage as far as I can tell is in line with the ram, however I can't change it as I have arguably the most basic BIOS ever put on a motherboard, and I am simply out of ideas. Please send help.

 

[rgd1101]

full system spec? need exactly model

 

[Kiecam]

full system spec? need exactly model

HP MS-7826 Kaili Motherboard
2x4GB Corsair XMS3 Ram (Currently whats in there but I have more)
EVGA GTX 1060 SSC
4770K i7

 

[Starcruiser]

Make sure there's no dust or physical damage to the slot in question. You'll also want the RAM installed to be a matched set, or at the very least have the same timings.

I find that it helps with system stability to bump the RAM voltage up a step when you have all 4 slots occupied. With the newest BIOS on that board you should have some options for overclocking, but HP is really bad about documenting updates so I don't know exactly what is available.

 

[Kiecam]

Make sure there's no dust or physical damage to the slot in question. You'll also want the RAM installed to be a matched set, or at the very least have the same timings.

I find that it helps with system stability to bump the RAM voltage up a step when you have all 4 slots occupied. With the newest BIOS on that board you should have some options for overclocking, but HP is really bad about documenting updates so I don't know exactly what is available.

I have options for processor overclocking as the board/processor combo came from hp overclocked to just under 5Ghz, however thats about it apart from basic settings for storage/security stuff.

 

[Third-Eye]

I've been working on trying to get a small issue of mine fixed for a little while now, and I have finally hit the point of coming to the internet for help. A few weeks ago, I randomly had 3 of my sticks of ram stop working (or so I thought), and after taking 3 of them out, leaving me with one everything started booting up normally. This was fine until I got fed up of only having 8gb of ram and I figured, hey lets pull some out of the computer beside me and throw it in, which I knew was good ram. Didn't boot. So after spending the last couple days playing with it, I've discovered all the ram I had that I thought was bad is actually fine. I have tested all of the slots individually, and they all work fine, with proper values being reported in CPU-Z, the other interesting part is that the computer will boot if I run dual channel in channel A, however anything other than that configuration, or a single channel setup causes the computer not to run. I've tried a CMOS reset, DRAM voltage as far as I can tell is in line with the ram, however I can't change it as I have arguably the most basic BIOS ever put on a motherboard, and I am simply out of ideas. Please send help.

If you have thermal paste available, take the CPU out of the socket and check for bent or broken pins. If you see none, put the CPU back in and repaste the CPU. Reseating the CPU might fix the issue.

 

[Starcruiser]

I have options for processor overclocking as the board/processor combo came from hp overclocked to just under 5Ghz, however thats about it apart from basic settings for storage/security stuff.

So there's no options for overclocking the memory, aka DRAM or DDR3? Even on the latest bios?