S
SouthEssex
My old desktop computer has died and I am now using a laptop. The desktop came with OEM Windows XP professional and I purchased the first full license version of Windows 7 professional ultimate which I successully installed on the desktop.
My laptop came with OEM Windows 10 home and, since the desktop computer has now died I wanted to see if I could upgrade my laptop Home version of Windows 10 to the professional version by means of the upgrade path offered by Microsoft.
On my laptop I opened settings and entered the product key for my Windows 7 license, it was not accepted. A few days later Windows ran an upgrade and I then got a message stating that I needed to activate Windows. When I attemted to do so I found that Windows 10 professional Ultimate had been installed but it would not accept either my orginal Windows 10 home product key or my Windows 7 product key.
The error message I get is 0xC004C003 which I understand refers to a duplicate installation.
As my desktop is now dead how can I remove the product key from it and can I install it on my laptop. Alternatively if it is not possible to install in on my laptop how can I revert to the OEM Windows 10 home version. The laptop is an HP Envy and the product key was not provided with it however I have used Belarc to find it
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My laptop came with OEM Windows 10 home and, since the desktop computer has now died I wanted to see if I could upgrade my laptop Home version of Windows 10 to the professional version by means of the upgrade path offered by Microsoft.
On my laptop I opened settings and entered the product key for my Windows 7 license, it was not accepted. A few days later Windows ran an upgrade and I then got a message stating that I needed to activate Windows. When I attemted to do so I found that Windows 10 professional Ultimate had been installed but it would not accept either my orginal Windows 10 home product key or my Windows 7 product key.
The error message I get is 0xC004C003 which I understand refers to a duplicate installation.
As my desktop is now dead how can I remove the product key from it and can I install it on my laptop. Alternatively if it is not possible to install in on my laptop how can I revert to the OEM Windows 10 home version. The laptop is an HP Envy and the product key was not provided with it however I have used Belarc to find it
Continue reading...