Windows 10: I lost my activation,can anyone help me?

I just upgraded my windows 10 home to windows 10 pro with an activate code from the internet and it didnt work so I jumped back to windows 10 home but I lost my activation right now.I tried to reset the PC but it didnt work. I used troubleshoot and it said : "We found a windows 10 home single language digital license for this device running windows 10 pro.To activate using this digital license,you need to install windows 10 home single language" .Can anyone help me to get the old activate key or please give me a new windows 10 activate key :

:)

 

help to remote connect

not sure how to use both programs u 2 suggested, i need more helpful steps thanks

 

Lost Windows Key

Hi Saravanan,

I would suggest you to follow the steps below and check if it helps.

To start Product Activation:

• Go to Start, then select Settings, choose
  Update & security, and then select Activation.
• If your device is not activated, the Activate by phone option will be available.

Hope this information is helpful.

 

Lost default photo viewer after profile rebuild

Thanks Brink. I've tried those steps before i started searching Google. After the profile rebuild i don't have the Photo app listed to choose to make it default in either the system settings for default apps or the Open With option.

I can't even find it doing a search. Seems to have been removed somehow with the profile rebuild, which doesn't make sense.

Might be helpful to list what i've done I've done the open with check, the choose default program in the system menu, tried that in device manager default programs also. I've checked the programs and features Turn windows features on/off and it's not listed there (never thought it was but that was a suggestion), searched the MS Store, it's not listed there either.

I don't like playing in the registry unless i have defined steps and haven't found anything for this yet, just the Win7 version like in my OP.