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SDH
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W7 for dual processors requires W7 Professional, or higher

HP Recommended
 

 

Virdislusarc gets all the credit for making this discovery, and I wanted to get it up as an individual post so others could find this more easily in the future.

 

If you are going to be doing clean installs of Windows 7 on workstations that physically can support 2 processors (2 dual cores or 2 quad cores, for example) make sure to buy at least Windows 7 Professional, and get 64-bit of course.  This assumes you want to use the two processor sockets now, or in the future.

 

Why Microsoft felt it would be a great idea to strip dual processor capabilities out of the Home versions is beyond me.  It can't be money, could it?

 

Anyway, the lowest cost for W7Pro64 I've found is to buy the OEM "system builder's" pack from Newegg.com with free shipping, for about 140.00 total.  http://www.newegg.com/Product/Product.aspx?Item=N82E16832116992

I tried different solutions. But the problem is not the motherboard or processor. I checked that my Windows 7 Home Premium supports only one processor (which can have many cores). Windows 7 Professional version supports up to two physical processors. http://en.wikipedia.org/wiki/Windows_7_editions#Comparison_chart Nevertheless thank you for your help.

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