Windows 10: Using the current device's product key on my another device.

Hello,
My 6 year old PC has Windows 10 PRO (Retail License). It came with Windows 7 Home which also was successfully upgraded to Windows 10 Home (OEM License). Now, I have bought a new PC which came with Windows 10 Home. How do I use my retail PRO product key in my new laptop for upgrading to Pro? I also asked the Microsoft Community but they were unable to solve my problem (Using the current devices product key on my another device. - Microsoft Community).

:)

 

My Product Key


I have hit another roadblock in my marathon two-day attempt to restore the laptop that Windows 10 destroyed. I do not have the product key for the device, so cannot even revert to Windows 8.1. The product key is not shown in the Amazon purchase listing for the device, and I long ago lost the paperwork. Is there any way I can look it up (keeping in mind of course that the device itself is utterly unusable in its current state)?

 

Device Manager Un-Hiding Hidden Devices


When you connect a plug and play device, Windows Plug and Play manager detects it, finds and installs the driver. Device Manager lists the device with a solid icon.

The driver is only removed when you uninstall the device, not simply by disconnecting the device. When the device is disconnected, its driver is still installed. By default, Device Manager only displays connected devices. When you show hidden devices, note the Bluetooth icon you see is semi-transparent (not opaque). That indicates a "non-present" device. Sometimes also called a "ghost" device. The driver is still installed but the device is not currently detected (i.e. not connected).

Device can be disconnected when

• Device unplugged (e.g. removing a USB device)
• Turning a device OFF
• Disabling the device in BIOS (then windows won't detect it) or
• Device failure

So

• Check BIOS as suggested
• Check board connections
• Can b/t be turned off by a switch? or keyboard combination?

Also possible the b/t h/w failed

 

X800 GTO2 = Unknown Device

I flashed the BIOS on my X800 GTO2 last night and it is listed in the Device Manager as an Unknown Device. Is this normal?