No post after mixing some RAM.

[Vector Prime Stop Motion]

So, I wanted to upgrade my RAM, however the modules I had in my system were no longer to be found at my region. With this in my mind, I thought that mixing some RAM would not be a problem, as RAM speed is not that big of a problem in the workloads I have. I bought this (Corsair Vengeance LPX [CMK8GX4M1A2666C16]) to go with this (Kingston HyperX FURY Black Series [HX426C16FB2K2/16]).

At fist I installed sticks in new-new-old-old configuration. My system did recognize the modules however it marked them as "Hardware reserved" in task manager and in the resource monitor (screenshot attached).
Then I changed the configuration to new-old-new-old and my system stoped posting alltogether. After trying numerous times to get to at least a post screen, I gave up and removed the new RAM and changed the position of my old sticks to see, if my RAM slots were't broken. My system posted and booted, no questions asked.
Then I did the entire process again and got the same results.
As far as I'm aware, mixing RAM can result in performace problems but not the post problem, however simultaneously with me my friend also tried to upgrade his RAM the same way as I did and run into the same problem.
I'm really confused. Can somebody here lend me a hand, please?
I'm running Windows 11 and my friend is running Windows 10. I use ASUS TUF X470-PLUS GAMING motherboard with Ryzen 7 2700X.
Any help will be very appreciated.
And just to clarify, my RAM sticks were in fully. I did check to put them correctly; the problem is not that.

[191x7]

Quite normal when mixing ram, and Zen+ is known to have trouble running 4 sticks stable with some RAN even if it's identical.

Also, the same RAM should be in the same slot pair.

 

You could try changing ram with the friend.

[Kisai]

53 minutes ago, Vector Prime Stop Motion said:

So, I wanted to upgrade my RAM, however the modules I had in my system were no longer to be found at my region. With this in my mind, I thought that mixing some RAM would not be a problem, as RAM speed is not that big of a problem in the workloads I have. I bought this (Corsair Vengeance LPX [CMK8GX4M1A2666C16]) to go with this (Kingston HyperX FURY Black Series [HX426C16FB2K2/16]).

At fist I installed sticks in new-new-old-old configuration. My system did recognize the modules however it marked them as "Hardware reserved" in task manager and in the resource monitor (screenshot attached).
Then I changed the configuration to new-old-new-old and my system stoped posting alltogether. After trying numerous times to get to at least a post screen, I gave up and removed the new RAM and changed the position of my old sticks to see, if my RAM slots were't broken. My system posted and booted, no questions asked.
Then I did the entire process again and got the same results.
As far as I'm aware, mixing RAM can result in performace problems but not the post problem, however simultaneously with me my friend also tried to upgrade his RAM the same way as I did and run into the same problem.
I'm really confused. Can somebody here lend me a hand, please?
I'm running Windows 11 and my friend is running Windows 10. I use ASUS TUF X470-PLUS GAMING motherboard with Ryzen 7 2700X.
Any help will be very appreciated.
And just to clarify, my RAM sticks were in fully. I did check to put them correctly; the problem is not that.

You probably mixed different size modules. Is one set double-sided? Because that's why.

basically if you mix single rank and dual rank modules, this happens.

https://www.oempcworld.com/support/singlevsdualram.html

 

[Vector Prime Stop Motion]

I'll try to use your advices, however I can say it right now that there's no indication on the Corsair RAM of what size it is. Maybe the packaging has the answers.

[Qubit25]

If some ram stick is damaged died, asus mobos will make 3 beeps (if you installed motherboard beeper) and don't post (like nothing will work, no keyboard, no display). 

[Deadpool2onBlu-Ray]

On 3/27/2022 at 10:53 AM, Vector Prime Stop Motion said:

So, I wanted to upgrade my RAM, however the modules I had in my system were no longer to be found at my region. With this in my mind, I thought that mixing some RAM would not be a problem, as RAM speed is not that big of a problem in the workloads I have. I bought this (Corsair Vengeance LPX [CMK8GX4M1A2666C16]) to go with this (Kingston HyperX FURY Black Series [HX426C16FB2K2/16]).

At fist I installed sticks in new-new-old-old configuration. My system did recognize the modules however it marked them as "Hardware reserved" in task manager and in the resource monitor (screenshot attached).
Then I changed the configuration to new-old-new-old and my system stoped posting alltogether. After trying numerous times to get to at least a post screen, I gave up and removed the new RAM and changed the position of my old sticks to see, if my RAM slots were't broken. My system posted and booted, no questions asked.
Then I did the entire process again and got the same results.
As far as I'm aware, mixing RAM can result in performace problems but not the post problem, however simultaneously with me my friend also tried to upgrade his RAM the same way as I did and run into the same problem.
I'm really confused. Can somebody here lend me a hand, please?
I'm running Windows 11 and my friend is running Windows 10. I use ASUS TUF X470-PLUS GAMING motherboard with Ryzen 7 2700X.
Any help will be very appreciated.
And just to clarify, my RAM sticks were in fully. I did check to put them correctly; the problem is not that.

Mixing ram isn't usually a good idea, especially with Zen, which is picky with ram. Also, 4x8gb is usually harder to OC than 2x16gb