A few days ago a Web Talk reader named Tad Ensign, contacted me explaining how to perform a full Windows 7 installation from an Upgrade. I have to tell you that at the time I was completely unaware of this issue and his brilliant solution left me amazed. Apparently, if you try to make a full installation of Windows 7 after formatting your hard drive, the system could return you with a message saying that the key is not valid…something like this: “The Software Licensing Service determined that this specified product key can only be used for upgrading not for clean installations” Here is the workaround to solve this issue. Thanks Tad!
- Install Windows 7.
- Do not Enter the product key during setup.
- Once setup has finished installing click on the Registry File Named MediaBootInstall.reg and it will Reset to a Full Retail Product. To create such a file, copy and paste the following code on your Windows Notepad. Name it MediaBootInstall and give it .reg extension.
- Click Start.
- In the Search field, type cmd and press Enter.
- In the Command Prompt, type In slmgr -rearm and wait for a message to popup. Reboot your Computer.
- Go to Product Windows Activation and enter your Product Key.
- Done, you just converted from upgrade to Retail install.
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\OOBE]
“MediaBootInstall”=dword:00000000
To know more, read this other post of mine.
Tags: hack, Windows 7
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3 Comments to “How to Full Install Windows 7 after Formatting Hard Drive (Product Key not Valid Issue)”
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February 24th, 2010
but when use upgrade have option for formatting partition C ?
.-= mmg1818´s last blog ..Christina Applegate – Interview (Ellen 01.04.2009) HD-1080i =-.
February 25th, 2010
Even simpler… delet ei.cfg from the iso.. or use unetbootin and make a bootable usb install… then delete ei.cfg … when you install, it will ask you what version you want to install. Tell it the version you have the upgrade key for. …that’s it.. when it installs (on a clean hard drive) it takes the upgrade key without a complaint … and activates. NO messing around with the registry or rearm.
September 25th, 2010
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