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Windows 7: Upgrading from Win7 Home Pemium to Pro

11 Sep 2013   #1

Win7 Home Premium 64bit
 
 
Upgrading from Win7 Home Pemium to Pro

I recently had a custom gaming rig built with Windows 7 Home Premium installed not knowing I needed Windows 7 Pro or better to run more than 16gig of ram (32gig installed). I have a Windows 7 Pro key and was wondring if I can use that Pro key as an upgrade key by using the "Change activation key" feature or using the "Anytime Upgrade" feature?

I have a Full Pro key and Disk but was trying to avoid a FULL install lol.

My System SpecsSystem Spec
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11 Sep 2013   #2
Microsoft MVP

 

Since you're running 32 bit you would need to Upgrade to 64 bit to recognize all of your RAM.

As shown in this chart, only Basic will not recognize 16gb RAM in 64 bit. But all versions of 32 bit will only recognize 4gb RAM: Compare Windows 7 Editions - Windows 7 Help Forums
My System SpecsSystem Spec
11 Sep 2013   #3

Win7 Home Premium 64bit
 
 

You missed the whole point of my wanting to upgrade... I need to run Pro or higher to take advantage of all my ram for gaming. Windows 7 home premium and lower only recognize up to 16gig where as Pro and up will recognize up to I believe 196gig of ram.
My System SpecsSystem Spec
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12 Sep 2013   #4

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

Quote   Quote: Originally Posted by BrianSkipper View Post
You missed the whole point of my wanting to upgrade... I need to run Pro or higher to take advantage of all my ram for gaming. Windows 7 home premium and lower only recognize up to 16gig where as Pro and up will recognize up to I believe 196gig of ram.
NO, you need to upgrade from x32 to x64.
My System SpecsSystem Spec
13 Sep 2013   #5

Windows 7 Home Premium 64 bit sp1
 
 

His system specs show he is using x64, so in order to utilise 32gb of ram he will have to upgrade from Home Premium to Pro or better.
As far as I know you can use the same key for activation but someone with more knowledge of this would be better to advise you for certain.
I think you have to do a full reinstall to upgrade from Home Premium to Pro.

Edit. I see from Golden's reply & checking "Windows Anytime Upgrade" How to, you don't need to do a full reinstall.
My System SpecsSystem Spec
13 Sep 2013   #6

Microsoft Community Contributor Award Recipient

Windows 7 Ult. x64 Windows 8.1 x64 Ubuntu 12.04 LTS Tri-Boot
 
 

Home Premium x64 can use up to 16GB RAM
Professional and Ultimate x64 can use up to 192GB RAM

All x86 (32 bit) versions Windows can use up to 4GB RAM

See this for upgrading:
Windows Anytime Upgrade - How to
My System SpecsSystem Spec
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 Upgrading from Win7 Home Pemium to Pro





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