Pc won't boot with 2 ramsticks

[magic.ispark]

So I've bought a new pc a week ago and after everything was built i tried to start it. It didn't boot. After a few hours of research i found out that it might be the motherboard so I've switched it but it still wouldn't boot. Then I've switched the ram and it worked.
The pc boots with 1x8gb ddr4 corsair vengeance but not with 2x8gb.
The new ram I bought is a 1x16gb ddr4 kingston and it boots with both 8gb from corsair so 24gb ram but not with both at the same time so 32gb ram. Why is it that the 2x8gb just won't boot together. The new kingston is compatible with both 1x8gb bot not with all 3 at the same time.
So maybe the ram isn't broken but just not compatible with the other?

 

[richiestang_78]

First make sure you are installing the RAM in the correct spots, consult your MB manual.

Secondly did you buy the RAM sold as 2 8GB sticks together? Or did you buy individual 8GB sticks?

If its the latter then that is the issue, RAM can be picky, and RAM sold as "kits" such as 2 8GB sold as 16GB are tested to work together. If you did buy them as a kit then the RAM is faulty and you should be able to get it replaced either from the store or manufacturer.

 

[magic.ispark]

First make sure you are installing the RAM in the correct spots, consult your MB manual.

Secondly did you buy the RAM sold as 2 8GB sticks together? Or did you buy individual 8GB sticks?

If its the latter then that is the issue, RAM can be picky, and RAM sold as "kits" such as 2 8GB sold as 16GB are tested to work together. If you did buy them as a kit then the RAM is faulty and you should be able to get it replaced either from the store or manufacturer.

I've tried every slot already it doesn't work. And yes I've bought them as 2x8gb kit