Install "Update" to Win11 or is Fresh install absolute?


varxtis said:
Ammended question:
Ive decided to go for fresh install as my computer is experiencing issues that'll be addressed with a format and fresh install.
My current OS is Win10 pro. When I install fresh Win 11 Pro, do I use the windows key associated with my current OS/Setup, or will I need to install with a new Win11 Pro Key? I ask because as stated before, my system is qualified for a free "upgrade" to win11 pro. But idk if that's limited to an upgrade, or how that'd work for a fresh Win11 pro install after a complete format.
Click to expand...
The product key for windows 10 will work for windows 11. Chances are that the product key is embedded in the BIOS or the system will activate with a digital license.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 25H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Geekom AX7 Pro
    CPU
    AMD Ryzen 9 7940HS
    Memory
    32 GB
    Graphics Card(s)
    Radeon 780M Graphics
    Monitor(s) Displays
    Dell S2425H 24"
    Screen Resolution
    1920 x 1080
    Hard Drives
    2 TB NVMe SSD
    Internet Speed
    100 Mbs
    Browser
    Microsoft Edge / Firefox
    Antivirus
    F-Secure Security Suite
  • Operating System
    Windows 11 Pro 25H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Inspiron 3910
    CPU
    12th Gen Intel Core i7-12700 processor (12-Core, 25M Cache, 2.1GHz to 4.8GHz)
    Motherboard
    Dell 0KHP4K
    Memory
    16 GB
    Graphics card(s)
    Intel(R) UHD Graphics 770 with shared graphics memory
    Monitor(s) Displays
    Dell 27" Monitor S2721DS,
    Screen Resolution
    QHD 2560 x 1440 @ 75 Hz
    Hard Drives
    1TB M.2, PCIe NVMe, SSD
    Internet Speed
    100 Mbps
    Browser
    Edge
    Antivirus
    F-Secure Security Suite
If you have made backup images and saved the images to another disk drive or the cloud then you can restore an image.

Once a computer with Windows 10 has performed updates the licensing information is entered into Microsoft servers.

This enables the clean install of either Windows 10 or 11 with the same edition (home or pro).
 
Last edited:

My Computer

System One

  • OS
    Windows 10
    Computer type
    Laptop
    Manufacturer/Model
    HP
    CPU
    Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz
    Motherboard
    Product : 190A Version : KBC Version 94.56
    Memory
    16 GB Total: Manufacturer : Samsung MemoryType : DDR3 FormFactor : SODIMM Capacity : 8GB Speed : 1600
    Graphics Card(s)
    NVIDIA Quadro K3100M; Intel(R) HD Graphics 4600
    Sound Card
    IDT High Definition Audio CODEC; PNP Device ID HDAUDIO\FUNC_01&VEN_111D&DEV_76E0
    Hard Drives
    Model Hitachi HTS727575A9E364
    Antivirus
    Microsoft Defender
    Other Info
    Mobile Workstation
varxtis said:
My current OS is Win10 pro. When I install fresh Win 11 Pro, do I use the windows key associated with my current OS/Setup, or will I need to install with a new Win11 Pro Key?
Click to expand...
You don't say what your system is, but if it came with W10 Pro pre-installed by the OEM then it has a Pro key embedded in the bios. That key is valid for Windows 10/11. Setup will find it and use it in a clean install.

If you built the PC yourself and installed and activated W10 Pro, then it has a digital licence on Microsoft's activation servers. This is also valid for Windows 10/11. You can clean install W11 Pro and skip entering a key if asked. It will activate from the existing digital licence as soon as it can contact the activation servers.
 

My Computers

System One System Two

  • OS
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    Acer Aspire 3 A315-23-R9VY
    CPU
    AMD Athlon Silver 3050U
    Memory
    8GB
    Graphics Card(s)
    Radeon Graphics
    Monitor(s) Displays
    laptop screen
    Screen Resolution
    1366x768 native resolution, up to 2560x1440 with Radeon Virtual Super Resolution
    Hard Drives
    1TB Samsung EVO 870 SSD (from April 2026: 250GB EVO 850)
    Internet Speed
    150 Mbps
    Browser
    Edge, Firefox
    Antivirus
    Defender
    Other Info
    fully 'Windows 11 ready' laptop. Windows 10 C: partition migrated from my old unsupported 'main machine' then upgraded to 11. A test migration ran Insider builds for 2 months. When 11 was released on 5th October 2021 it was re-imaged back to 10 and was offered the upgrade in Windows Update on 20th October. Windows Update offered the 22H2 Feature Update on 20th September 2022. It got the 23H2 Feature Update on 4th November 2023 through Windows Update, 24H2 on 3rd October 2024 through Windows Update by setting the Target Release Version for 24H2, and 25H2 on 30th September 2025 through Windows Update by setting the Target Release Version for 25H2.

    UPDATE - 11 April 2026: due to mechanical deterioration this PC has been retired from active duty. The OS with all software and files has been migrated to my System Seven below to carry on as my general purpose 'main machine'.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro.

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 8GB RAM, 256GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro RTM and Insider Dev, Beta, and RP 24H2 as native boot vhdx.

    My SYSTEM FIVE is a Dell Latitude 3190 2-in-1, Pentium Silver N5030, 8GB RAM, 1TB NVMe ssd, supported device running Windows 11 Pro, plus Insider Beta, Dev, and Canary builds (and a few others) as a native boot .vhdx.

    My SYSTEM SIX is a Dell Latitude 5550, Core Ultra 7 165H, 64GB RAM, 1TB NVMe SSD, supported device, Windows 11 Pro 24H2, Hyper-V host machine. Updated to 25H2 on 30th September 2025.

    My SYSTEM SEVEN is a Lenovo Thinkpad T580, Intel Core i7-8650U, 16GB RAM, 512GB NVMe SSD + 2nd 512GB NVMe SSD, a supported device for Windows 11. This is my current general purpose 'main machine'. The installed Windows 11 Home from my System One has been migrated to this machine.
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Dell Latitude E4310
    CPU
    Intel® Core™ i5-520M
    Motherboard
    0T6M8G
    Memory
    8GB
    Graphics card(s)
    (integrated graphics) Intel HD Graphics
    Screen Resolution
    1366x768
    Hard Drives
    500GB Crucial MX500 SSD
    Browser
    Firefox, Edge
    Antivirus
    Defender
    Other Info
    unsupported machine: Legacy bios, MBR, TPM 1.2, upgraded from W10 to W11 using W10/W11 hybrid install media workaround. In-place upgrade to 22H2 using ISO and a workaround. Feature Update to 23H2 by manually installing the Enablement Package. In-place upgrade to 24H2 using hybrid 23H2/24H2 install media. Upgraded to 25H2 by Enablement Package. Also running Insider Dev, and Canary builds and Windows 10 as native boot .vhdx.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro.

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 8GB RAM, 256GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro RTM and Insider Dev, Beta, and RP 24H2 as native boot vhdx.

    My SYSTEM FIVE is a Dell Latitude 3190 2-in-1, Pentium Silver N5030, 8GB RAM, 1TB NVMe ssd, supported device running Windows 11 Pro, plus Insider Beta, Dev, and Canary builds (and a few others) as a native boot .vhdx.

    My SYSTEM SIX is a Dell Latitude 5550, Core Ultra 7 165H, 64GB RAM, 1TB NVMe SSD, supported device, Windows 11 Pro 24H2, Hyper-V host machine. Updated to 25H2 on 30th September 2025.

    My SYSTEM SEVEN is a Lenovo Thinkpad T580, Intel Core i7-8650U, 16GB RAM, 512GB NVMe SSD + 2nd 512GB NVMe SSD, a supported device for Windows 11. This is my current general purpose 'main machine'. The installed Windows 11 Home from my System One has been migrated to this machine.
Didnt end up making a restore backup image or anything. There are a few problems affecting the speed and performance that will, for now, be adequately addressed with a full format instead of just update. I will be getting a new laptop in January or Feb.
I apologize @Bree, my current OS is Win10 Pro.

So, Steps: create boot thumb drive for win11, Format, insert thumb drive and install windows 11, and use Windows 10 Pro key, and the system will automatically unlock Win11 Pro?
 

My Computer

System One

  • OS
    Windows 10
varxtis said:
My current OS is Win10 Pro.

So, Steps: create boot thumb drive for win11, Format, insert thumb drive and install windows 11, and use Windows 10 Pro key, and the system will automatically unlock Win11 Pro?
Click to expand...
You don't need to use any key. When asked for a key, just skip or select "I don't have a key". As your computer once had Win 10 pro it has a "Digital License" and will activate.

What Bree complain is that we don't know your hardware specs. Please edit your profile with ALL your hardware specs. It will help us to help you
www.tenforums.com

System Specs - Fill in at Ten Forums

How to Fill in your System Specs at Ten Forums
www.tenforums.com www.tenforums.com
If you don't want to use a MS account there is a little trick to use to skip it. Let us know.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro - Windows 7 HP 64 - Lubuntu
    Computer type
    PC/Desktop
    Manufacturer/Model
    custom build
    CPU
    i5 6600K - 800MHz to 4400MHz
    Motherboard
    GA-Z170-HD3P
    Memory
    4+4G GSkill DDR4 3000
    Graphics Card(s)
    IG - Intel 530
    Monitor(s) Displays
    Samsung 226BW
    Screen Resolution
    1680x1050
    Hard Drives
    (1) -1 SM951 – 128GB M.2 AHCI PCIe SSD drive for Win 11
    (2) -1 WD SATA 3 - 1T for Data
    (3) -1 WD SATA 3 - 1T for backup
    (4) -1 BX500 SSD - 256G for Windows 7 and Lubuntu
    PSU
    Thermaltake 450W TR2 gold
    Keyboard
    Old and good Chicony mechanical keyboard
    Mouse
    Logitech mX performance - 9 buttons (had to disable some)
    Internet Speed
    500 Mb/s
    Browser
    Firefox 64
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Asus Q550LF
    CPU
    i7-4500U 800- 3000MHz
    Motherboard
    Asus Q550LF
    Memory
    (4+4)G DDR3 1600
    Graphics card(s)
    IG intel 4400 + NVIDIA GeForce GT 745M
    Sound Card
    Realtek
    Monitor(s) Displays
    LG Display LP156WF4-SPH1
    Screen Resolution
    1920 x 1080
    Hard Drives
    BX500 120G SSD for Windows and programs
    & 1T HDD for data
    Internet Speed
    500 Mb/s
    Browser
    Firefox 64
Sorry for delayed response (understatement)
I appreciate it. I managed to do fresh install of Win 11 Pro using Win 10 Pro OEM Key. Works great (b^_^)b
 

My Computer

System One

  • OS
    Windows 10
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