[SOLVED] How to return OEM license?

[using google in BSOD]

last year i put on a retail windows 10 product key, now i've got new pc and i'm about to put the key to that new pc.
but however i want to deactivate the old pc's key and switch it back to OEM because i'm going to sell it.

are there any way to do so?

thank you.

 

[USAFRet]

last year i put on a retail windows 10 product key, now i've got new pc and i'm about to put the key to that new pc.
but however i want to deactivate the old pc's key and switch it back to OEM because i'm going to sell it.

are there any way to do so?

thank you.

Are either or both of these licenses associated with an MS account?

 

[using google in BSOD]

Are either or both of these licenses associated with an MS account?

the oem is not, but the retail does

 

[USAFRet]

the oem is not, but the retail does

In the MS account, disassociate this PC from that retail license.

Then, do a full wipe and reinstall. In this process, do NOT enter any license key.

Hopefully, it will activate itself with the original OEM license.

 

[using google in BSOD]

thanks!