ChromeOS Flex for Windows 10 PCs: Portugal’s €3 USB Offer and What to Check Before Installing

The Portuguese launch is the local version of a Europe-wide campaign. Italian reporting from late October described the same collaboration as an effort to combat PC obsolescence and extend the life of computers that cannot be upgraded after the end of Windows 10 support. Italy's coverage put the bootable stick on a November schedule with three euros of shipping charges.

For Windows users the news isn't really the USB stick. What matters is the questions it raises about Windows 10's remaining time, what the numbers mean, and whether Flex fits a given machine.

The numbers, and who paid for them​

Fraunhofer Austria's figures come from a white paper commissioned by refurbed, which is also the commercial partner in this campaign. That doesn't make the research wrong, but readers should keep it in mind.

Fraunhofer's own announcement gives the EU-wide picture:

• About 74 million Windows 10 devices across the EU27 as of January 1, 2026.
• About 41 million of them, roughly 55%, are expected not to migrate to Windows 11.
• One extra year of use for those devices would avoid about 0.32 million metric tons of CO₂ and about 1,172 metric tons of e-waste.
• Country breakouts include about 5.8 million devices in Germany and 0.7 million in Austria. Italian coverage adds that 5.47 million of these would be in Italy.

The Portuguese figures, as Grande Consumo reports them:

Our own arithmetic shows how consistent the model is:

• Portugal's 1.17 million out of 2.1 million is about 56%, almost the same as the EU-wide 55%.
• Every scenario works out to roughly 7.8 kg of CO₂ and about 28 grams of e-waste per device for each extra year of use.
• The Italian numbers match the same pattern. Tom's Hardware Italy reported that one more year for the affected Italian machines could avoid about 156 tonnes of e-waste and about 43,000 tonnes of CO₂.

So Portugal hasn't been singled out. The same per-device assumptions are applied across countries. These are modeled, potential savings. They are not measured results from the Google-refurbed program.

The 28-gram e-waste figure may look small for a laptop. It suggests the model spreads a device's disposal over its total lifespan rather than counting the whole machine as landfill avoided.

How Fraunhofer got the 41 million: it used a multistage funnel. It started with the installed Windows base, then applied the Windows 10 market share, a split between private and business use, technical eligibility for upgrade, and finally a "realistic" migration rate. Inputs came from public sources and were cross-checked against a second source where possible.

One finding stands out. In the business segment, Fraunhofer says only about 2.8% of Windows 10 devices technically can't upgrade. Corporate delays are mostly caused by procurement cycles, testing, and stretched IT teams. In the private segment, the share of incompatible hardware is much higher. Some consumers also refuse to upgrade for privacy reasons or because they object to Windows 11's heavier AI integration.

In short: The 1.17 million Portuguese PCs are a modeled estimate from research commissioned by an interested party, built from public data. The method is plausible and consistent across countries. Treat it as a reasonable forecast, not a hardware census.

Fixing the Windows 10 timeline​

Grande Consumo says Windows 10 security updates are "approaching" their end. That wording needs a correction:

• Mainstream support is already over. Windows 10 reached end of support on October 14, 2025. Earlier WindowsForum coverage of the refurbed stick made the same point: PCs that are not upgraded stop receiving security updates.
• Consumer Extended Security Updates (ESU) are the temporary lifeline. Microsoft's ESU page says the program provides critical and important security updates for Windows 10 version 22H2 until it ends on October 12, 2027. It includes no feature updates, no other fixes, and no technical support.
• Updates aren't automatic. A Windows 10 PC gets ESU patches only if it is enrolled. Microsoft lists these consumer prerequisites:
  • Windows 10 22H2 in the Home, Pro, Pro Education, or Workstations edition.
  • The latest cumulative update and the ESU Licensing Preparation Package (KB5126256) installed.
  • A Microsoft account with administrator rights.
• Domain-joined, Entra-joined, MDM-enrolled, and kiosk devices are excluded from the consumer program. Businesses need the commercial ESU route.
• Enrollment is still open. Microsoft says you can enroll any time until the program ends. One ESU license covers up to 10 devices. Microsoft also notes that consumer ESU options can vary by region, including in the European Economic Area, which covers Portugal.

To check status on a Windows 10 PC, go to Settings > Update & Security > Windows Update. If the device is eligible, you'll see an enrollment link there; if it's enrolled, the status appears there too.

In short: October 12, 2027, is the cutoff for enrolled Windows 10 22H2 machines, not for every Windows 10 PC. An unenrolled PC has been missing security patches since October 2025.

What ChromeOS Flex is, and what it isn't​

ChromeOS Flex is Google's cloud-first operating system designed for existing PCs and Macs. It's free to download, so the refurbed stick is a convenience, not a requirement. According to the Italian launch materials, Flex can be downloaded for free or ordered, starting in November, as a USB stick through refurbed. Earlier WindowsForum reporting described the stick as purple, co-branded, and 16 GB.

Google's own documentation sets out the limits:

• It's a replacement, not an upgrade. A full install wipes the drive. Google's FAQ says installation erases all programs, settings, and files, and that erased data can't be recovered. Dual boot isn't supported.
• Your Windows apps won't come with you. Italian coverage put it plainly: ChromeOS Flex does not run Windows .exe programs. Google Play and Android apps aren't supported on Flex either.
• Compatibility depends on the exact model. Google tests and certifies specific models. Similar models or variants may have problems. Certified models are guaranteed basics such as installation, keyboard, display, networking, USB, and sleep/resume. Bluetooth, touchscreens, function keys, and SD card slots aren't guaranteed. Each model also has a "certified until" date, after which updates may continue but aren't guaranteed.
• Some hardware won't work at all. Google's known-issues page lists several exclusions:
  • 32-bit x86 and ARM machines.
  • Very old Intel GMA graphics.
  • Some Wi-Fi chipsets, including the Killer AX500 and MediaTek MT7902.
  • Macs with a T2 chip or M1 processor, which Google calls unsupported.
  • Microsoft Surface devices, unless the specific model is certified.
  • Nvidia GPUs, which Google describes as generally unstable.
• The security model is different from a Chromebook's. WindowsForum's earlier analysis noted that Flex has no Google security chip, so ChromeOS verified boot is not available. Firmware updates remain the PC maker's responsibility.

What Flex does provide is automatic OS updates on supported hardware and a capable browser for Google Workspace, Microsoft 365 on the web, streaming, and everyday web use. That's a reasonable fit for a parent's email-and-banking laptop. It doesn't suit an accountant who depends on desktop Excel macros, a gamer, or anyone using an old scanner whose driver only exists for Windows.

In short: Flex can give an incompatible PC a supported OS, but only on hardware Google supports and only for people whose work happens mostly in a browser.

A safe test plan for Windows 10 owners​

If you have a PC that can't run Windows 11, try Flex before you commit:

1. Check your Windows 11 eligibility first. The Windows 11 requirements are TPM 2.0, Secure Boot, and a supported CPU. A machine that just needs a firmware setting turned on doesn't need a new OS.
2. Check ESU status under Settings > Update & Security > Windows Update. If the PC isn't enrolled, enrolling buys you time until October 2027.
3. Look up your exact model on Google's ChromeOS Flex certified-models list and note its "certified until" date.
4. Live-boot from USB without installing. Booting Flex from the stick leaves Windows untouched. Google warns that live boot is meant only for testing: performance is slower, storage is limited, and the live session gets no OS updates.
5. Test what you actually use: Wi-Fi, printer, webcam, Bluetooth peripherals, and every web app you rely on.
6. Back up everything before a full install, because the install wipes the drive.
7. If installation fails, Google's troubleshooting suggests:
   • Switch storage from RAID to AHCI in the BIOS/UEFI settings.
   • Try a different USB drive if writing stalls or the drive won't boot.
   • Keep at least 16 GB of internal storage free.

The bigger picture​

Google has been making this pitch for a while. In February 2024, The Register reported Google urging users to pop on a copy of ChromeOS Flex instead of discarding Windows 10 PCs. The outlet also noted that only around 600 devices are currently certified to run ChromeOS Flex at that time.

What's new is the packaging: a refurbishment retailer, research with country-level numbers, and a €3 stick that removes the step of making your own installer.

It helps to look at the incentives on both sides. Google gets new ChromeOS users. Refurbed gets publicity and a study that recommends refurbished hardware as the default replacement. Microsoft, for its part, would rather you buy a Windows 11 or Copilot+ PC.

Fraunhofer's recommendations are more even-handed than any single company's pitch. They call for temporary transition options for PCs that can't upgrade, targeted migration campaigns for businesses, refurbished devices as the default replacement, and pressure on policymakers and manufacturers to extend security support beyond 2027 for devices without TPM 2.0 or Secure Boot.

For Portugal's 1.17 million at-risk PCs, the realistic outcome is a mix. Some owners will enroll in ESU and wait, some will buy refurbished or new hardware, some will try Linux, and some compatible machines will move to ChromeOS Flex. The stick is a cheap, low-risk way to find out which group your old laptop belongs in.