Question Can't run dual channel ( 2x8gb)

[Maduo]

One ram stick has hardware problems according to windows memory diagnostic (tested each stick alone). Could that be a big reason why my pc won't boot in dual channel?

 

[USAFRet]

One ram stick has hardware problems according to windows memory diagnostic (tested each stick alone). Could that be a big reason why my pc won't boot in dual channel?

Well, yes.
If a RAM stick is faulty, that can cause all sorts of issues.