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Windows 7: Difference between upgrade and clean install?

25 Apr 2012   #1

Windows 7 Home Premium 64bit
Difference between upgrade and clean install?

Is there a difference between a clean install of Windows 7 Professional and upgrading from Windows 7 Home Premium to Windows 7 Professional?

I ordered a computer and I require Windows 7 Professional, but they accidentally sent me one with Windows 7 Home Premium. They have offered me a Windows 7 Professional Upgrade disk as a resolution to the problem, but I'm worried an upgrade may not be as stable as a clean installation and I'm not sure if I should accept this resolution.

Thanks in advance for any help,

My System SpecsSystem Spec
25 Apr 2012   #2

Windows 7 Ultimate 64-bit

Well naturally the upgrade will leave some fluff from the previous install which Professional may not need, but depending on how long you've had/used the computer (it sounds like it's fairly new for you), the difference will be minimal.
My System SpecsSystem Spec
25 Apr 2012   #3
Hanna 1

win7 home premium-64bit-SP1-IE10

Welcome to the forum Soupy

Please visit each one of these tutorials to know how to do-it:
Clean Install Windows 7

Clean Install with a Upgrade Windows 7 Version

and the differences are:

Difference between windows 7 upgrade and windows 7 full version - Microsoft Answers

Good luck
My System SpecsSystem Spec
25 Apr 2012   #4
Microsoft MVP


No, there should be no difference after using Anytime Upgrade to simply insert the Professional Product Key which only unlocks the few extra features. Windows Anytime Upgrade - How to - Windows 7 Forums

You may however find these steps helpful to Clean Up Factory Bloatware - Windows 7 Forums.

Depending upon how much bloatware was larded in by the maker and how it cleans up you may choose to do what most tech enthusiasts do and Clean Reinstall - Factory OEM Windows 7.

Either way capture a Win7 backup image of the upgraded OS afterwards to use in place of the double-reinstall. Backup Complete Computer - Create an Image Backup
My System SpecsSystem Spec

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