If you’ve tried upgrading to Windows 11 only to get stuck with cryptic error codes, missing TPM messages, or endless reboot loops — don’t worry. You’re definitely not alone.

This guide covers every common installation issue, why it happens, and step-by-step solutions to help you get Windows 11 running smoothly.

One of the most common upgrade errors is when the installer says your PC “can’t run Windows 11.”
In most cases, this means TPM 2.0 or Secure Boot is turned off in your BIOS.

How to Fix It:

1. Reboot your PC and enter the BIOS/UEFI (usually by pressing Del, F2, or F10 while booting).

2. Find Security or Advanced Settings → enable TPM 2.0 or Intel PTT / AMD fTPM.

3. Then go to Boot Settings and turn on Secure Boot.

4. Save changes and restart.

💡Tip: You can confirm TPM status by typing “tpm.msc” in the Windows search bar. If TPM is active, you’ll see “The TPM is ready for use.”

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If your upgrade freezes at 99% or fails with an error like 0xC1900101 or 0x8007007f, it’s usually caused by outdated drivers, low storage, or background antivirus interference.

Quick Fix Checklist:
✔️ Free up at least 30GB of space on your system drive
✔️ Temporarily disable third-party antivirus or firewalls
✔️ Disconnect external USB devices (except keyboard and mouse)
✔️ Run Windows Update Troubleshooter (Settings → System → Troubleshoot)

If the issue persists, you can manually install Windows 11 using the Installation Assistant from Microsoft’s official site.

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Some users find that their PC installs Windows 11 up to a certain point, then reboots endlessly or shows a black screen.

Possible Causes:

• BIOS not updated

• Corrupted installation files

• RAID/SATA driver conflicts

Solution:

1. Update your BIOS/UEFI firmware to the latest version from your motherboard manufacturer.

2. Recreate the installation media using the Media Creation Tool.

3. Change SATA mode to AHCI in BIOS if it’s set to RAID.

4. Reinstall Windows 11 cleanly.

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💡 If you’re stuck with one of these errors, running “sfc /scannow” and “DISM /Online /Cleanup-Image /RestoreHealth” in Command Prompt often helps repair missing system files.

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If installation succeeds but your system feels sluggish afterward, don’t panic — this is often due to outdated drivers or background services syncing after the upgrade.

Optimization Tips:

• Update all drivers via Windows Update → Optional Updates

• Reinstall GPU drivers from NVIDIA/AMD/Intel official sites

• Turn off Startup Apps (Settings → Apps → Startup)

• Adjust visual effects: “Performance Options → Adjust for best performance”

Within a day or two, background indexing and sync processes will calm down and your PC should feel snappy again.

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⊙ Always back up your data before major updates
⊙ Keep BIOS and drivers updated regularly
⊙ Use official Microsoft tools (not third-party installers)
⊙ Disconnect unnecessary peripherals before installing
⊙ Verify TPM and Secure Boot are enabled early

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Most Windows 11 installation issues come down to TPM settings, outdated drivers, or BIOS misconfigurations — all easy to fix once you know where to look.
By following the steps above, you can eliminate the most common upgrade blockers and enjoy a clean, stable Windows 11 experience.

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💻 Windows 10 End of Support Confirmed! Complete Guide to Free Windows 11 Upgrade

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