Windows 10: 8.1 to 10 upgrade after some time

Long time ago I've bought 2 Windows 8 Pro licenses and used them on old laptops, during "free upgrade to Windows 10" offering I upgraded both and some more windows 8 systems to win10. Then those two laptops have broke and I somehow lost those licenses keys. Recently I was going thru archive emails and accidentally found invoices for them with product keys. I was so happy that was just what I need at the time. I've managed to install windows 8.1 on new pc and run updater but after successfully running Windows I got message that license key was not found and it can't be activated. So now my

:)

 

Unlocked Realtek HD Audio Drivers Windows 7 & 8 (With Dolby Digital Live and DTS Interactive)

DTS supported natively by Windows 8/8.1 and it should work on windows 10 too just DDL require to unlock your driver .

 

Windows 8 Pro Retail => Windows 10 Pro (Free upgrade) Fails Activation after hardware change

Hi,

I bought 2 retail licenses (one for my desktop and one for my laptop) for Windows 8 several years ago and upgraded to Windows 10 (via the free upgrade). Recently I had to change some hardware (motherboard) and I get the following error code when trying to
activate Windows: 0xC004C003.

I have tried the following, all of which have failed.

1. Troubeshoot -> I recently changed hardware on this device (I can only see my Laptop License and not my desktop)
2. Provided the Installation ID (via phone helpdesk) on two occasions.

First help desk technician suggested I buy a new Windows License and the second suggested I reinstall and use Windows 8. Both suggestions from help desk are ridiculous.

How do I proceed without having to:

1. Pay for a license I should technically already have
2. Downgrade back to Windows 8 (loose time / data)

 

Windows 8 to Windows 10 upgrade

Hi,

Welcome to Microsoft Community and thank you for your interest in Windows 10.

I understand the inconvenience that you are experiencing. I will definitely assist you.

This issue may occur due to out dated driver. Try the below steps and check.

Method 1.

I would suggest you to update Printer driver and check if it helps to resolve the issue. Follow the below steps:

• 
  Press Windows key + R and type
  devmgmt.msc in the box and hit Enter.
  
• 
  Go to Printer queues and locate for the printer.
  
• 
  Right click on the printer and click on update to update the driver.
  

If the issue still persist try the below steps:

Method 2.

I suggest you to uninstall the printer driver and then reinstall the latest driver from the printer manufacturer website. Before you un-install the driver download the latest update driver. Follow the steps:

Step 1. To uninstall.

• 
  Press Windows key + R.
  
• 
  Type devmgmt.msc in the box and hit
  Enter.
  
• 
  Go to Printer queues and uninstall the driver.
  

Step 2. To re-install.

• 
  Download the latest printer driver from the manufacturer’s website.
  
• 
  Right-click on the setup file of the driver and select Properties.
  
• 
  Select Compatibility tab.
  
• 
  Check Run this program in Compatibility mode.
  
• 
  Let the driver install and then check the functionality.
  

Hope this information helps, post us with the status we will be glad to assist you.