Hi James Dunbar
I'm sorry but your computer can't officially support Windows 11.
The oldest Intel processor should be of 8th gen.
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Currently using Win11 Pro 22H2 desktop w/ Lenovo ThinkCentre M900 SFF with a IQ1X0MS motherboard. Would like to upgrade the processor to work with Windows 11 pro 26H1 or 26H2. If I'm correct this motherboard would support a processor upgrade to CORE i7-6700 (4c 3.4 / 4.0 GHz, 8MB). Would this upgrade work with Windows 11 pro 26H1?
Hi James Dunbar
I'm sorry but your computer can't officially support Windows 11.
The oldest Intel processor should be of 8th gen.
Hi,
Even if you upgrade to an i7-6700 processor, it still won't meet the requirements for Windows 11.
I recommend reverting to Windows 10 and signing up for ESU (Extended Security Updates), which runs until October 12, 2027.
Keep in mind that using Windows 11 on an incompatible computer can lead to usage issues; Microsoft states that if a computer doesn't meet the requirements, it may stop receiving support and Windows updates.
Regarding version 26H1, it is limited to ARM processors—specifically systems from manufacturers using an OEM base.
However, the 26H2 release—which is expected to support both ARM and x86 processors—may be coming soon, though there is no exact date yet.
It is recommended to look for a computer with at least an 8th-generation Intel processor (or newer) and an AMD Ryzen 1000 series or newer (for versions prior to 25H2) or Ryzen 3000 series or newer (for 25H2).
For ARM-based laptops:
Please consider rating the question (accepting the answer or not) and visiting the Microsoft Q&A community if you have further questions.
Thanks.
AI answer
No.
Windows 11, version 26H1 is not an upgrade target for an existing Windows 11 Pro 22H2 desktop. It is a specialized release that is available only preinstalled on select new devices coming to market in early 2026, and it is not offered as an in-place update through Windows Update.
For hardware, the first 26H1 devices launch with Qualcomm Snapdragon X2 Series processors. The supported processor list provided for Windows 11, version 26H1 includes Qualcomm Snapdragon X2 Plus, X2 Elite, and X2 Elite Extreme. An Intel Core i7-6700 is not listed there.
So upgrading the Lenovo ThinkCentre M900 SFF to an Intel Core i7-6700 would not make it a supported Windows 11 26H1 device.
For existing PCs, the recommended enterprise releases remain Windows 11 versions 24H2 and 25H2. Also, Windows 11 26H1 devices will not be able to update to the next annual feature update in the second half of 2026 because 26H1 is based on a different Windows core.
References: