OldPCGuy

Every question, answered

Every guide on the site, as the question it answers. Filter by section, device, or system, or type a few words to narrow the list.

Windows 10 & 11

Security updates, ESU, and whether your PC can run Windows 11. Go to Windows 10 and 11 →

  • How do I keep getting Windows 10 security updates?

    Enroll in free Extended Security Updates (ESU) from Windows Update. Home PCs are covered until October 12, 2027.

    Windows 10 after support · How-to · Updated
  • Is Windows 10 still safe to use?

    Yes, if it's enrolled in ESU and keeps installing updates. Without ESU it gets riskier every month.

    Windows 10 after support · Quick answer · Published
  • Why isn't the Windows 10 ESU "Enroll now" link showing?

    Usually the PC isn't on version 22H2, is missing updates, isn't signed in with an admin Microsoft account, or is linked to a work or school.

    Windows 10 after support · Fix · Published
  • What do I do with Windows 10 after October 2027?

    Upgrade to Windows 11 if the PC qualifies. If not, switch to Linux Mint or ChromeOS Flex, or replace it.

    Windows 10 after support · Decision guide · Published
  • Can my PC run Windows 11?

    Run Microsoft's free PC Health Check. PCs from 2018 on usually pass, and a TPM or Secure Boot failure can often be fixed in the BIOS.

    Upgrading to Windows 11 · How-to · Updated
  • Windows 11 24H2 support ended. How do I update?

    Check your version with winver. If it says 24H2, install version 26H2 from Windows Update, or install it by hand on an unsupported PC.

    Upgrading to Windows 11 · How-to · Published
  • Should I install Windows 11 on an unsupported PC?

    It works with tools like Rufus, but updates aren't guaranteed. Fine for a spare PC, not the one you bank on.

    Upgrading to Windows 11 · Decision guide · Updated
  • Can a 7th-gen Intel PC run Windows 11?

    Not officially, and no setting or processor swap changes that. Your options are ESU for now, Linux, a workaround, or replacing it.

    Upgrading to Windows 11 · Decision guide · Published
  • What do I do about the Secure Boot certificates expiring?

    Keep Windows Update and Secure Boot on. Most PCs update on their own; older ones may need a BIOS update.

    Setup & security · How-to · Published
  • How do I set up Windows 11 without a Microsoft account?

    Make the install USB with Rufus and tick its options to skip the online account and create a local one.

    Setup & security · How-to · Published

Fix a problem

Slow, freezing, or failing: find the cause before you spend anything. Go to Fix a problem →

  • Why is my computer so slow?

    Open Task Manager and see which graph sits near 100%: Disk, Memory, or CPU. That tells you what to fix.

    Slow or freezing · Fix · Published
  • Why is my laptop slow after a Windows update?

    Windows is usually still finishing work in the background. Leave it plugged in for an hour or two, then restart it.

    Slow or freezing · Fix · Published
  • How do I check if my SSD or hard drive is failing?

    Install the free CrystalDiskInfo and read the Health Status. Caution or Bad means back up today.

    Health checks · How-to · Published
  • How do I check my laptop's battery health?

    Run powercfg /batteryreport and divide Full Charge Capacity by Design Capacity. Under 70% means it's time for a new battery.

    Health checks · How-to · Published

Speed up & upgrade

SSDs, memory, and when an upgrade is still worth the money. Go to Speed up and upgrade →

  • How do I speed up an old laptop or PC?

    Do the free fixes first, then swap a hard drive for an SSD and add memory if it's running short.

    Where to start · How-to · Updated
  • Should I upgrade the SSD or RAM first?

    If it still has a hard drive, the SSD, almost always. If it has an SSD but only 4 GB of memory, add memory.

    Where to start · Decision guide · Published
  • Should I upgrade my old PC or replace it?

    Upgrade a PC from about 2018 on if the parts cost well under half of a refurbished replacement. Otherwise replace it.

    Where to start · Decision guide · Published
  • How do I clone a hard drive to an SSD?

    Boot a free tool like Rescuezilla from a USB stick, copy the old drive to the SSD, then swap the SSD in.

    SSD & storage · How-to · Published
  • Does my laptop have an M.2 slot?

    If Windows shows an NVMe drive, yes. Otherwise check the maker's spec sheet for your exact model, or open the cover.

    SSD & storage · Quick answer · Published
  • How much RAM do I need for Windows 11?

    8 GB for everyday use, 16 GB to be comfortable with lots of tabs or for a PC you'll keep for years.

    Memory · Quick answer · Updated

Buy used

Refurbished business PCs, the old ThinkPads worth buying, and how to avoid a dud. Go to Buy used →

  • Are refurbished computers worth buying?

    Yes, if it's an off-lease business model from 2018 or later with an SSD, 8 to 16 GB of memory, and a warranty.

    How to buy · Decision guide · Updated
  • How old is my computer?

    Check the processor in Settings, System, About. For the exact date, look up the serial number on the maker's site.

    How to buy · How-to · Published
  • What should I check before buying a used laptop?

    That it charges with its own charger, has no BIOS password or work account, matches the listing, and every port works.

    How to buy · How-to · Published
  • What's the best old ThinkPad to buy?

    For most people, the T480: it runs Windows 11, takes 32 GB of memory, and has a swappable battery.

    Model guides · Model guide · Published
  • Is the ThinkPad T480 still good in 2026?

    Yes. It runs Windows 11 officially, takes 32 GB of memory and an NVMe SSD, and needs one firmware fix.

    Model guides · Model guide · Published
  • Is the ThinkPad T440 still worth using?

    For web, email, documents, and Linux, yes, with an SSD. It can't run Windows 11 officially.

    Model guides · Model guide · Published
  • Refurbished ThinkPad or a new cheap laptop?

    Usually the ThinkPad: more memory, a better screen and keyboard, and replaceable parts. New wins on warranty and battery.

    Comparisons · Comparison · Updated

Linux & alternatives

Free systems that keep an old PC useful after Windows 10. Go to Linux and alternatives →

Homelab & servers

Mini PCs, home servers, self-hosted apps, and what old hardware is still good for. Go to Homelab and servers →

Backup, wipe & recycle

Move your files, erase the old computer, and get rid of it the right way. Go to Backup, wipe and recycle →

  • How do I move everything to a new computer?

    Copy your folders to an external drive, back up with Windows Backup, sign in with the same Microsoft account, and reinstall programs.

    Move to a new PC · How-to · Updated
  • How do I wipe a computer before selling it?

    Back up, then Reset this PC with Remove everything and Clean data on. For an SSD, turn on encryption first.

    Wipe & sell · How-to · Updated
  • Where can I recycle an old computer in Topeka?

    The Shawnee County Household Hazardous Waste facility takes electronics free, except $40 per CRT. Best Buy also takes most electronics.

    Recycle or reuse · Local guide · Updated
  • What should I do with an old laptop?

    Speed it up, give it Linux or a new job, sell or donate it, or recycle it free if it's done.

    Recycle or reuse · Decision guide · Published
  • Where can I get rid of an old TV in Topeka?

    The Shawnee County Household Hazardous Waste facility takes flat-screen TVs free and tube TVs for $40. Best Buy charges $29.99 per TV.

    Recycle or reuse · Local guide · Published