Change windows 7 product key WITHOUT reinstall [Home prem. -> Pro]

amd62

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Hello

I recently scrapped a old laptop, and kept the Windows 7 Pro produkt key. My desktop has a windows 7 home premium edt.

I wish to change to pro, but without reinstalling, and without losing the home premium. Is it possible to switch the pro and home edt. without reinstalling, or losing my home prem. key?

(It seems i posted in wrong section first. sorry)
 

My Computer My Computer

At a glance

Windows 7 64bit Home PremiumIntel i5 4670kCorsair LP 1866mhz CL9Zotac Gtx 660
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom Build
OS
Windows 7 64bit Home Premium
CPU
Intel i5 4670k
Motherboard
Asus Maximus Vi Impact
Memory
Corsair LP 1866mhz CL9
Graphics Card(s)
Zotac Gtx 660
Sound Card
Onboard Supreme x-fi
Monitor(s) Displays
60hz
Screen Resolution
1080p
Hard Drives
Ocz Vertex 3,
Old HDD
PSU
Thermaltake 750W
Case
Bitfenix Prodigy
Cooling
Nothing cool.
Keyboard
Razer Lycosa
Mouse
Razer Mamba
Internet Speed
40-50mbit down 4-5 up
You cannot use an OEM Product Key on any computer but the one it came with. If the Pro Key you have came from the original computer's COA sticker, or from a KeyFinder, then it's OEM, and CANNOT be transferred to the mew machine.
 

My Computer My Computer

At a glance

Win 7 x64 Home Premium (and x86 VirtualBox VM...i3 370M/i7 6500U8GB - finally :)/8GBit's an i3, dude!/dual Intel&nVidia
Computer type
Laptop
Computer Manufacturer/Model Number
Asus K52F or Lenovo B51-80
OS
Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
CPU
i3 370M/i7 6500U
Motherboard
Asus/Lenovo
Memory
8GB - finally :)/8GB
Graphics Card(s)
it's an i3, dude!/dual Intel&nVidia
Sound Card
onboard
Monitor(s) Displays
15.6" built-in
Screen Resolution
1366x768/1920x1080
Hard Drives
750GB Seagate internal
Sundry external drives attached to other computers on the local network
1TB SSD on the Lenovo
PSU
n/a
Internet Speed
as much as I can get - usually on a dongle/phone, so <1MB/s
Antivirus
MSE/Defender
Browser
IE11/12/Edge/Chrome/FF(if I must)
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