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**Robert Salas** · 08-06-2016, 01:29 AM

I'm planning to format my whole hard drive and reinstall my whole operating system... but how do i know my Windows 10 Product key??? because i lost my windows cd product key.....

**Double clutch** · (This post was last modified: 08-06-2016, 02:16 AM by Double clutch.)

Please read these articles

https://goo.gl/Nrkls5 https://goo.gl/lhRUkn

**MyComputerIsFried** · 08-06-2016, 03:57 AM

(08-06-2016, 01:29 AM)Robert Salas Wrote: I'm planning to format my whole hard drive and reinstall my whole operating system... but how do i know my Windows 10 Product key??? because i lost my windows cd product key.....

i used the advanced startup settings to reinstall windows 10 and it never asked me for any key. I did this like 5 times because i got a ton of errors

**Double clutch** · (This post was last modified: 08-06-2016, 02:25 PM by Double clutch.)

Sorry I misread. You should be registered with Microsoft. You shouldn't need to enter a product key your windows 10 should activate once you reinstall. This tutorial will show you how to verify you are activated.

https://goo.gl/rKrSHf

**MarioLuigi55** · 08-06-2016, 09:09 AM

You can try using Nirsoft ProduKey to view the key. https://www.nirsoft.net/utils/product_cd_key_viewer.html

**Partha** · (This post was last modified: 08-08-2016, 07:24 AM by Partha.)

I would also suggest Nirsoft's ProduKey. Makes the work very convenient