Your desktop cannot run Windows 11 — what now?

Windows 10 stopped receiving support on 14 October 2025. If you ran the Windows 11 check on a desktop and it came back as not compatible, the machine is still sitting there working exactly as well as it did the day before. That is worth saying first, because most of what has been written about this reads as though the hardware failed. It did not.

Why your machine fails the check

Almost always one of two things, and neither is about speed.

TPM 2.0. A small security chip Windows 11 requires. A lot of machines that have one have it switched off in the BIOS from the factory, so it is worth checking before concluding you do not have it — this is the single most common false negative.

The processor generation cut-off. Microsoft drew a line at roughly Intel’s 8th generation and the equivalent AMD Ryzen parts. A 7th-generation office machine that is perfectly quick for what it does sits on the wrong side of a line that was drawn about security architecture rather than performance. That is the frustrating part and it is a fair thing to be annoyed about.

The options, in order

Keep using it. A real option, not a consolation prize. The machine works. What has stopped is the flow of security updates, which matters most for a machine that browses the internet and handles anything sensitive, and matters far less for one running a label printer, a workshop machine or a till. Understand what it is exposed to and decide accordingly.

Extended security updates. Microsoft offers paid extensions on different terms for home and business users. If you need more time, that is the mechanism — check the current terms directly with Microsoft rather than trusting any date you read second-hand, this one included, because the tracks differ and they have moved.

Repurpose it. A machine too old for Windows 11 is rarely too old to be useful. A lightweight Linux distribution genuinely does make one usable again, and a desktop is easier to repurpose than a laptop because you can add a drive or memory to it. Be honest about whether you will though — a plan is not the same as a way of postponing the decision.

Move it on. If it is going to sit unused, it loses value every month it does. This is the point most people reach eventually, and reaching it sooner is worth more than reaching it later.

Why this lands hardest on desktops, and on businesses

Two reasons. Desktops last longer than laptops, so the installed base that is now on the wrong side of the line skews older and skews towards towers and small form factor machines rather than portables.

And offices buy in fleets. Thirty identical machines bought in the same year all fail the same check on the same day, which turns a slow replacement cycle into a single decision about a room full of hardware. If that is the position you are in, IT asset disposal covers handling it as one job, including the data side and the records you need to keep.

What it means for what the machine is worth

Support ending is not the same as the hardware ageing. What decides the figure on a second-hand desktop is what is inside the case — processor, memory, storage and above all the graphics card if there is one — and none of that changed in October 2025.

What did change is that a lot of similar machines came onto the market at once, which is a reason to be realistic rather than a reason not to bother. What decides what an old desktop is worth goes through it component by component.

Before it goes anywhere

Deal with the drives, and remember a desktop usually has more than one. A mechanical drive left in from an upgrade years ago is the classic forgotten one, and it is still holding whatever was on it. Wiping a machine before selling it covers the steps, and data wiping and secure data destruction covers having it done for you with a certificate recording the work.

Where it goes next

One machine: selling an old computer. If you know the badge, Dell desktops and HP desktops go into what each maker called things and why it matters. A room of them is IT asset disposal.

Whichever you pick, the thing worth avoiding is the fifth option nobody chooses on purpose: leaving thirty machines in a store cupboard until the decision makes itself.