Windows could not complete the installation [FIXED]
If Windows installation fails or gets stuck, try these steps: 1. Disconnect external devices. 2. Boot into Safe Mode. 3. Repair system files via Command Prompt using sfc and DISM. 4. Clear TPM and reset BIOS. 5. Perform a clean install using a bootable USB.
If you encounter the error "Windows could not complete the installation," your system may be stuck during setup. Here are several methods to resolve this issue:
The operating environment of this tutorial: Dell XPS 13, Windows 11
1. Disconnect External Devices
External peripherals can interfere with the Windows installation process, especially during the initial setup phase. Removing them helps isolate potential conflicts.
- Shut down your computer completely.
- Disconnect all external devices including USB drives, printers, webcams, and docking stations.
- Keep only the keyboard, mouse, and monitor connected if necessary.
- Restart the computer and allow the installation to proceed.
![Windows could not complete the installation [FIXED]](https://img.php.cn/upload/article/000/000/000/175606404429878.jpeg)
2. Boot into Safe Mode and Resume Installation
Safe Mode loads Windows with minimal drivers and services, which can help bypass installation blockers caused by corrupted system processes.
- Power off the device by holding the power button for 10 seconds.
- Turn it on and immediately press F8 or Shift F8 repeatedly before the Windows logo appears.
- If the boot menu appears, select "Safe Mode with Networking" or "Last Known Good Configuration."
- Allow the system to boot and check if the installation resumes automatically.
![Windows could not complete the installation [FIXED]](https://img.php.cn/upload/article/000/000/000/175606404513453.jpeg)
3. Use Command Prompt to Repair System Files
Corrupted system files might prevent installation completion. Using built-in repair tools via Command Prompt can fix file integrity issues.
- Boot from a Windows installation USB or DVD.
- Select your language preferences and click "Next," then choose "Repair your computer."
- Navigate to "Troubleshoot > Advanced Options > Command Prompt."
- Run the following commands one at a time:
sfc /scannow /offbootdir=C:\ /offwindir=C:\Windows
DISM /Image:C:\ /Cleanup-Image /RestoreHealth
- Close the Command Prompt and restart the system after the scan completes.
![Windows could not complete the installation [FIXED]](https://img.php.cn/upload/article/000/000/000/175606404677620.jpeg)
4. Clear TPM and Reset BIOS Settings
A full or improperly configured Trusted Platform Module (TPM) can halt Windows setup, especially on newer devices with security requirements.
- Restart the computer and enter the BIOS/UEFI setup by pressing F2, F10, or Delete during startup.
- Navigate to the Security tab and locate the TPM or PTT (Intel Platform Trust Technology) settings.
- Select "Clear TPM" or "Reset to Factory Defaults" if available.
- Save changes and exit. The system will reboot and may resume installation.
5. Perform a Clean Installation Using USB Drive
If the installation repeatedly fails, creating a fresh installation medium can eliminate media-related corruption.
- Download the official Windows Media Creation Tool from Microsoft’s website.
- Connect a blank USB drive with at least 8GB of storage.
- Use the tool to create a bootable Windows installer.
- Boot from the USB drive by changing the boot order in BIOS.
- During setup, choose "Custom: Install Windows" and delete all existing partitions.
- Proceed with a clean install on the unallocated space.
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