• Home
  • Helpful Articles
  • What to do about Windows 10 that's no longer supported? The quickest, safest, and most cost-effective solutions.
サポートが切れたWindows 10はどうする?最短で安全・低コストに解決する選び方

What to do about Windows 10 that's no longer supported? The quickest, safest, and most cost-effective solutions.

When Windows 10 support ends, security updates will cease, making the OS vulnerable. However, replacing your entire PC setup all at once can be a significant burden.

This article aims to simplify the available options for cost-conscious users in their 20s and early 30s, focusing on "safety, affordability, and practicality."

We will provide the most direct path for each objective, covering upgrading to Windows 11, utilizing ESU (Extended Security Updates), buying a new or used PC, and even using tablets (iPads) or smartphones (iPhones) as replacements or supplementary devices. We will also summarize options like purchasing, renting, and selling, helping you find the best solution within your current budget.


Conclusion First: Four Options (How to Prioritize)

When faced with an unsupported Windows 10, your primary options are "upgrade to Windows 11," "extend life with ESU," "buy a new PC," or "substitute with a tablet/smartphone." The best choice depends on what you need from your computer (purpose), how much you can spend (budget), and how long you want to use it (lifespan).

For business use or handling personal information, prioritizing security and avoiding an unsupported OS is the safest choice. On the other hand, for browsing, video viewing, or basic office documents, a supplementary setup with an iPad or iPhone might be sufficient.

Another option is to use a rental PC as a temporary solution, allowing you to calmly decide on a replacement. This article will organize each path by timeline ("immediately," "within a few months," "within six months") to help you find the "quickest and most regret-free" route for your situation.

 


Risks and Precautions When Continuing to Use Windows 10

When Windows 10 support ends, the OS itself will no longer receive security updates. Even if it appears to function normally, unpatched vulnerabilities will accumulate, gradually increasing the risk of malware and data breaches.

Relying solely on antivirus software is dangerous; an un-updated OS is akin to having a broken lock on your door. Specifically, activities like online banking, e-commerce operations, and accessing corporate clouds may be prohibited by internal regulations when connecting from an unsupported OS.

Furthermore, third-party applications may cease to guarantee operation after OS support ends, often being excluded from new features and bug fixes. This can lead to unstable performance and reduced support, accumulating unseen inconveniences.

In conclusion, continuing to use Windows 10 as your "main machine" is not recommended. While it might be possible to temporarily extend its life by limiting its use to "offline-only tasks," it's best to avoid internet connections and handling important data.


Quickly Determine Windows 11 Upgrade Compatibility

Upgrading to Windows 11 depends on whether your current PC meets the requirements. Key points include "TPM 2.0," "Secure Boot," "compatible CPU generation," "memory capacity," and "available storage." If these are met, it can be the smoothest and safest solution.

First, check your PC's manufacturer model and specifications, then use the official "PC Health Check" or the Settings app to diagnose compatibility. Pushing a PC that barely meets the requirements can lead to issues with every update and sluggish performance, sacrificing your daily experience.

If your PC has less than 8GB of RAM, even if you can upgrade, it's likely to lack comfort. In such cases, if upgrading memory is difficult, "buying a new PC" might offer better overall cost-performance.

If your primary use is web browsing and Office applications, a combination of an iPad with a keyboard case and cloud storage can often serve as a replacement, expanding options for those less dependent on Windows apps.

Determine upgrade compatibility early: if it's not possible, move to the next option (ESU or replacement); if it is, proceed with backup followed by an upgrade.

 

Key compatibility check items

For readers eager to quickly assess upgrade eligibility, here are the main points. TPM 2.0 and Secure Boot often require activation in firmware settings, and their names may vary in BIOS/UEFI.

Check the CPU generation against the manufacturer's list for compatibility. For storage, a larger temporary area is needed during updates, so organizing unnecessary files or using external storage is a practical solution.

If ultimately compatible, proceed with the standard flow: full backup → gradual implementation via Windows Update → checking for driver issues.

 


 

Understanding ESU (Extended Security Updates): What is "Extended Life"?

ESU is a mechanism to continue receiving security updates for a certain period after Windows 10 support ends. The benefit is preserving your existing assets (peripherals and apps) and maintaining immediate security.

However, it's important to note that ESU incurs annual costs, may have regional differences and organizational requirements for eligibility and acquisition, and does not guarantee new OS features or compatibility improvements.

Specifically, extending the life of a "barely functional PC" with an old CPU and storage via ESU will not improve sluggish performance or lack of support for new applications. Furthermore, a replacement decision will eventually be necessary after the ESU period ends, making it likely just a postponement.

While ESU can be a "realistic grace period" for workplaces with strict security requirements or individuals facing immediate migration difficulties due to specific business applications, for personal main machines, it's wise to plan for replacement or a transition to using tablets concurrently.

ESU is not a panacea. Understand "what it protects and what remains unchanged" and consider using it only for the minimum necessary period.

 

Decision flow for ESU utilization

The ideal flow is: extend life with ESU → prepare for migration in parallel → smoothly transition to the "next environment" before the deadline. In other words, ESU is not the goal, but rather "a means to buy time for a safe transition." Proactively performing backups and testing the new environment in advance will minimize failures in case of sudden problems.

 


 

"Realistic" Cost-Performance Comparison: New Purchase, Used, Rental

Buying new is the classic solution, refreshing both performance and security. A new Windows 11 laptop can provide stable operation as a primary device for 3-5 years. Used PCs, however, offer lower initial costs but often come with drawbacks like battery degradation and limited warranties. If your use is specific, renting for a short term to bridge the gap while you carefully consider your final purchase can be a reasonable approach. Especially for light uses like "currently focused on academics/office work" or "mainly video viewing and light document creation," choosing a tablet (iPad) + cloud setup can reduce overall costs. With a keyboard case and note-taking apps, the iPad can often surpass a PC in terms of portability, battery life, and boot speed. For heavy-duty tasks like gaming, specialized development, or creative work (RAW processing, 3D, video editing), it's more cost-effective in the long run to invest in a new Windows 11 PC with a modern CPU and sufficient memory to secure a long-lasting platform. If you're unsure, "writing down your current uses" is a shortcut. Avoid unnecessary over-speccing and choose an environment that is "just enough."

Rough Cost Estimates (Approximate, Tax Included)

Option

Initial Cost

Running Costs

Who it's for

Considerations

New Win11 Laptop

80,000-150,000 yen

Low

Primary device for 3+ years

Higher initial investment

Used Win11 Laptop

40,000-90,000 yen

Low

Price-conscious

Check battery, warranty

Rental PC

5,000-10,000 yen/month

Medium

Bridge, short-term projects

Expensive for long term

iPad + Keyboard

40,000-100,000 yen

Low

Mainly light use

Some Windows-only apps not available

*Prices are market average images. Final decision should consider actual specifications, warranty, and stock status.

 


 

Practical Solutions: Replacing/Supplementing with Tablets/Smartphones (iPad/iPhone)

For those not heavily dependent on Windows apps, shifting to a "cloud-centric" workflow primarily with an iPad or iPhone can help reduce overall costs and effort. Tasks like email, Slack, Zoom, Office viewing/editing, learning/note-taking, and PDF annotation can be comfortably handled with an iPad + keyboard case. Furthermore, with cloud storage (Google Drive, OneDrive) and password management in place, the burden of data migration is reduced. For people who travel frequently, primarily use devices for video and learning at home, or frequently create documents and review materials, an iPad can often boost daily productivity due to its "fast startup," "long battery life," and "portability," surpassing a PC. In addition, integration with an iPhone makes photos, scanning, and tethering seamless. Even if Windows remains your main device, adding an iPad as a "home secondary device" can reduce the load on an old Windows 10 machine, simultaneously improving safety and comfort.

 


 

Immediate Action Checklist (Security and Migration Preparation)

This is an immediate action list for those short on time. Start with basic measures to prevent damage.

  1. Full data backup (duplicate to external SSD/cloud)

  2. Organize unnecessary apps/files (to facilitate upgrade compatibility diagnosis)

  3. Export and store login information for browser and main apps

  4. Save 2-step verification backup codes in a secure location

  5. Record current settings for antivirus, VPN, and password manager

  6. Perform Windows 11 compatibility diagnosis (if incompatible, consider ESU/replacement/tablet options)

  7. Check if online banking/internal tools prohibit "unsupported OS use"

  8. Consider arranging a "rental PC" to bridge the gap during OS migration tasks

Each item might seem minor, but executing them reduces the chance of migration failure and simultaneously lowers the risk of loss or leakage. Especially for authentication backups, it's the last resort to avoid "getting stuck" during device migration, so be sure to complete it.

 

 


 

Budget-Based Plans: Which one is for you?

The optimal solution changes based on "what problem you're facing now" and "by when you want to resolve it." Below are model plans.

Safety First (Short Term: Resolve within this month)

  • Goal: Stop online work on unsupported OS

  • Steps: Backup → Bridge with rental PC → Consider replacement candidates

  • Aid: Use iPad for family at home, perform online procedures only on new environment

  • Benefits: Immediate risk reduction, allows unhurried device selection

Learning/Office Centric (Medium Term: Optimize within a few months)

  • Goal: Improve comfort while minimizing overall cost

  • Steps: Use iPad Air + keyboard for daily tasks → Windows only when necessary (work/school)

  • Aid: Smooth collaborative work with cloud storage and Office Online

  • Benefits: Lower initial cost, portable, good battery life

Creative/Development (Medium to Long Term: Invest for Productivity)

  • Goal: Secure processing power and stability

  • Steps: Invest in new/quality used Windows 11 → iPad Pro for secondary display or notes

  • Aid: External SSD, 32GB+ RAM, color-accurate display

  • Benefits: Reduced work time = improved overall cost-performance

 


 

Utilizing PRODIG: Purchase, Rental, Buyback, and Corporate Support

PRODIG supports you in "getting just what you need, when you need it." For purchases, we offer a wide inventory of used iPhones and iPads tailored to your budget and needs, including various condition ranks, sales, and junk (discounted) items. Rentals are ideal for bridging migration periods or short-term projects. You can cash in unused devices through our buyback program, reducing your total expenditure. For corporations and organizations requiring multiple device deployments or urgent consultations, please contact our dedicated support channel.

  • Condition Ranks

    • S Rank: Brand new, unopened.

    • A Rank: Very good condition. Minimal scratches or signs of use, but generally clean.

    • B Rank: Good condition. Visible scratches or small dents from general use, but no operational issues.

    • C Rank: Fair condition. Noticeable scratches or paint peeling, but no impact on functionality.


Flawless Data Migration: Order and Key Points

Data migration is all about "order." First, back up all user data (documents, pictures, desktop) from your old PC to an external SSD. Next, safely store your browser favorites and passwords, email client settings and archives, and 2-step verification backup codes.

Even if you use cloud storage, creating an "offline full backup" first provides a significant boost in peace of mind. For the new environment, prioritize security settings (Windows Update, app store updates, antivirus, firewall) and remove unnecessary pre-installed apps.

The standard procedure is to restore data only after these steps are completed. Reinstall only "truly necessary" apps, and keep a record of licenses and activation information. Finally, check for any data remaining only on the old PC's local storage, and then properly initialize, dispose of, or sell the device. This prevents the "I don't know where anything is" situation.

Minimum Migration Checklist

  • Full backup to external SSD (verify contents on another device)

  • Transfer of browser, email, and 2-step verification

  • Duplication with cloud and local storage

  • New environment updates and initial security setup

  • Re-check for any missing data before initializing the old PC

 


 

Frequently Asked Questions (FAQ)

Q1: Is it okay to keep Windows 10 for offline use only?
A: Temporarily, for limited use, yes. However, infection via USB media and human error are not zero. Not recommended for important tasks or storing sensitive data. Plan your migration early.

Q2: Is ESU enough to be safe for now?
A: You'll receive OS security updates, but don't expect new features or compatibility improvements. Performance limitations and reduced third-party support are unavoidable, so view ESU as a "grace period for migration" and prepare your next environment concurrently.

Q3: Can an iPad "almost replace a PC"?
 A: Yes, if your main tasks are web browsing, Office applications, notes, learning, and meetings. For tasks requiring Windows-specific applications or special drivers, a PC is necessary. The trick is to assign roles to each device for different tasks. Also, ensure compatibility of the applications you intend to use, as iPadOS differs from WindowsOS.

Q4: What about concerns with used devices (battery, exterior)?
A: Check the condition rank, warranty, and return policy. Choosing "just enough" for your specific use will lead to higher satisfaction. If you're unsure, renting to experience the device firsthand is recommended.

Q5: How should I dispose of old devices?
A: After completely wiping the data, selling it for cash can reduce your total costs. Please use our Akihabara store's buyback service.

👉 PRODIG's Used iPad Series List here
https://prodig-shop.com/collections/ipadseries

👉 PRODIG's Used iPad Air Series List here
https://prodig-shop.com/collections/ipad-air

👉 PRODIG's Used iPad Pro Series List here
https://prodig-shop.com/collections/ipad-proseries

👉 PRODIG's Used iPhone List here
https://prodig-shop.com/collections/iphone

👉 Sale Items List here
https://prodig-shop.com/collections/sale

👉 Junk/Discounted Items List here
https://prodig-shop.com/collections/junk

👉 PRODIG Rental here
https://prodig-rental.com/

👉 PRODIG Buyback (Akihabara Store)
https://prodig-kaitori.com/

👉 Corporate Inquiries here
https://prodig-shop.com/pages/b2b-reception

👉 PRODIG Top Page
https://prodig-shop.com/

 

Other Services

法人向けレンタルはこちら
法人向けスマートフォン・タブレット・PCのレンタルならプロディグレンタルへご相談ください。
サービスサイトへ
Back to blog
Category list