Question Nvme working for one cpu not other

[Jithin07]

Hi, I'm using Asrock b450m pro 4 mobo, i used ryzen 2400g with an nvme, then changed by cpu into Ryzen 3600 with which too nvme works fine, but now whenever i try to change into 2400g, nvme is not working, not even detecting in mobo which has windows installed in it but works well with 3600, why is that? Can anyone help me out? Thank you

 

[kerberos_20]

bios version is same as when it was working with 2400g?

 

[Jithin07]

Yup

 

[CountMike]

Hi, I'm using Asrock b450m pro 4 mobo, i used ryzen 2400g with an nvme, then changed by cpu into Ryzen 3600 with which too nvme works fine, but now whenever i try to change into 2400g, nvme is not working, not even detecting in mobo which has windows installed in it but works well with 3600, why is that? Can anyone help me out? Thank you

Do you also have dedicated graphic card ?
2400g has only 8 PCIe lanes and 3600 has 16, NVMe needs 4 lanes.
Check your MB manual how those lanes are used according to processor. Even IGPU will take 4-8 lanes possibly leaving none for NVME.

 

[Jithin07]

Do you also have dedicated graphic card ?
2400g has only 8 PCIe lanes and 3600 has 16, NVMe needs 4 lanes.
Check your MB manual how those lanes are used according to processor. Even IGPU will take 4-8 lanes possibly leaving none for NVME.

I tried with and without gpu

 

[Jithin07]

bios version is same as when it was working with 2400g?

Yes but later, yesterday i think i updated bios too