WIndows Upgrade Assistant Issue

I'm running Windows 7 with this CPU:  Intel Core i5-2500K Sandy Bridge 3.3GHz  6MB Cache, LGA 1155.  Windows Upgrade Assistant reports that I cannot upgrade to Windows 8.1 because the CPU doesn't support NX.  According to Coreinfo, NX is supported, and in the BIOS>CPU, NX is enabled.  I've attached a screen shot of the Coreinfo report.  Please advise. Coreinfo report
ddantesAsked:
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Joe Winograd, Fellow&MVEDeveloperCommented:
Hi David,
Could be due to a BIOS that is too old. I suggest going to the manufacturer's website and doing a firmware update. Regards, Joe
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ddantesAuthor Commented:
Hi Joe:   Thank you for your recommendation.  I downloaded the latest BIOS from this site:
http://support.asus.com/Download.aspx?SLanguage=en&m=P8H67-M+PRO&p=1&s=39 
My question:  are the BIOS updates cumulative, or must I flash every one of them in order to assimilate all the improvements?
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*** Hopeleonie ***IT ManagerCommented:
Try version  3904. This should work. Otherwise you will get a message.
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JohnBusiness Consultant (Owner)Commented:
I have an i5-3320 CPU in my Windows 8.1 machine and it works fine. See what happens after the BIOS upgrade. I have also done cumulative BIOS upgrades over time with no issue.
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Joe Winograd, Fellow&MVEDeveloperCommented:
David,
My experience is that BIOS updates are cumulative, unless specified otherwise. I typically update to the latest firmware posted at the manufacturer's site. Mahalo, Joe
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ddantesAuthor Commented:
Thanks to all Experts.  I flashed Bios version 3904 and ran the Upgrade Assistant, but it still reports that the CPU doesn't support NX.
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JohnBusiness Consultant (Owner)Commented:
Can you try installing Windows 8 to see if it works? The upgrade adviser may be incorrect.
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ddantesAuthor Commented:
I haven't purchased a license for Windows 8, not knowing if my system is compatible.  Is there a way to install it before paying for licensing?
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JohnBusiness Consultant (Owner)Commented:
I think you can only get legal trial copies of Windows 8 via Microsoft TechNet which may not help you.
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Joe Winograd, Fellow&MVEDeveloperCommented:
After flashing to 3904, it may have reset to defaults, so go into the BIOS and make sure that NX is enabled.
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ddantesAuthor Commented:
Thank you both.  I did need to reconfigure the BIOS in many respects.  But the enabling of NX was still there by default.  I'll look for a trial download of Windows 8.1 and see if it will install.
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JohnBusiness Consultant (Owner)Commented:
It is a long shot but you can download Windows 10 and try it (spare hard drive perhaps). There is no cost to this. I have Windows 10 running. If Windows 10 will run, so also will Windows 8.
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ddantesAuthor Commented:
There is a 90-day trial of Windows 8 Enterprise.  I'll try that and post again...
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Joe Winograd, Fellow&MVEDeveloperCommented:
At this point, I'm inclined to agree with John's earlier post — likely a bug/hiccup in the Upgrade Assistant. Looking forward to hearing how the install of W8 goes.
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ddantesAuthor Commented:
Thanks to all Experts who commented.  The trial version of Windows 8 Enterprise installed without any issues, so the Upgrade Assistant's report was incorrect.
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JohnBusiness Consultant (Owner)Commented:
@ddantes  - Thanks and I was happy to help.
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Joe Winograd, Fellow&MVEDeveloperCommented:
You're welcome, David. Happy to help. Regards, Joe
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