Anyway I can find my windows 10 product key?

[dota2er]

I pulled my ssd out from old computer, which contain the windows 10. I erased all the data beside windwos 10 itself before unplug it. I did research before, and check it by command prompt which my key can be transferred. Now I use another ssd as my system drive, and I can't find a way to recover my activation key. What can I do now?

 

[derekullo]

Your Windows 10 's key is bound to you motherboard.

You shouldn't need your Windows 10 product key.

Just reinstall Windows 10 on your new ssd in the same system and Windows will know what to do.

 

[USAFRet]

I pulled my ssd out from old computer, which contain the windows 10. I erased all the data beside windwos 10 itself before unplug it. I did research before, and check it by command prompt which my key can be transferred. Now I use another ssd as my system drive, and I can't find a way to recover my activation key. What can I do now?

Where did your Win 10 come from?
If you are just reinstalling in the same system but just another drive, you do not need the Win 10 key.
Install, and it will activate itself once it goes online.

 

[dota2er]

I pulled my ssd out from old computer, which contain the windows 10. I erased all the data beside windwos 10 itself before unplug it. I did research before, and check it by command prompt which my key can be transferred. Now I use another ssd as my system drive, and I can't find a way to recover my activation key. What can I do now?

Where did your Win 10 come from?
If you are just reinstalling in the same system but just another drive, you do not need the Win 10 key.
Install, and it will activate itself once it goes online.

I installed it on my new desktop, beside hard drive and graphic card, all others are brand new. That is why I am asking

 

[dota2er]

Your Windows 10 's key is bound to you motherboard.

You shouldn't need your Windows 10 product key.

Just reinstall Windows 10 on your new ssd in the same system and Windows will know what to do.

My new ssd is m.2, my old z87 dont have the slot for it

 

[USAFRet]

I installed it on my new desktop, beside hard drive and graphic card, all others are brand new. That is why I am asking

So this is a whole new system?
You should have done this before you changed the hardware:
https://support.microsoft.com/en-us/help/20530/windows-10-reactivating-after-hardware-change
http://www.tomshardware.com/forum/id-3164428/windows-build-1607-activation.html

So you've built a new system, and installed the OS on the new drive?
And it's not activated?

Again...where did the original Win 10 come from? Upgraded from something previous? Somewhere else?
If you go through the Activation Troubleshooter in Settings, what does it say?

 

[dota2er]

I installed it on my new desktop, beside hard drive and graphic card, all others are brand new. That is why I am asking

So this is a whole new system?
You should have done this before you changed the hardware:
https://support.microsoft.com/en-us/help/20530/windows-10-reactivating-after-hardware-change
http://www.tomshardware.com/forum/id-3164428/windows-build-1607-activation.html

So you've built a new system, and installed the OS on the new drive?
And it's not activated?

Again...where did the original Win 10 come from? Upgraded from something previous? Somewhere else?
If you go through the Activation Troubleshooter in Settings, what does it say?

Yes, this is whole new system. No, it is not activated. My win 10 is upgrade for my win 8 which I bought from a market.

 

[USAFRet]

Yes, this is whole new system. No, it is not activated. My win 10 is upgrade for my win 8 which I bought from a market.

Right.
For an Upgraded Win 10, you should have linked it to your MS account before swapping hardware.

If you go through the Activation Troubleshooter in Settings, what does it say?

 

[dota2er]

Yes, this is whole new system. No, it is not activated. My win 10 is upgrade for my win 8 which I bought from a market.

Right.
For an Upgraded Win 10, you should have linked it to your MS account before swapping hardware.

If you go through the Activation Troubleshooter in Settings, what does it say?

"We weren't able to to activate windows on this device." That is what It said. I may need to try install the original system ssd into old system see if I can have my product key back.

 

[madmatt30]

Yes, this is whole new system. No, it is not activated. My win 10 is upgrade for my win 8 which I bought from a market.

Right.
For an Upgraded Win 10, you should have linked it to your MS account before swapping hardware.

If you go through the Activation Troubleshooter in Settings, what does it say?

"We weren't able to to activate windows on this device." That is what It said. I may need to try install the original system ssd into old system see if I can have my product key back.

You need to get your old system back up & running & follow that info USAFRet posted.

Essentially all you need to really do is create microsoft account & use it as a login on the old system.
This should automatically tie the account to the license,its then a easy re activation on the new pc.