Resolving a blue screen in Windows

A “blue screen” or “stop error”, commonly known as the blue screen of death (BSOD), can occur when upgrading to a new version of Windows, when starting your computer, or unexpectedly during use of Windows 10.

The blue screen often displays a message: “An error has occurred on your PC and it needs to be restarted. We are collecting some error information and will then restart.” You may see an error code such as HAL_INITIALIZATION_FAILED, PAGE_FAULT_IN_NONPAGED_AREA, CRITICAL_PROCESS_DIED, or BAD_SYSTEM_CONFIG_INFO, which can indicate the problem, but often more information is needed to resolve it.

**Resolve blue screen during an upgrade**

A BSOD can occur during the upgrade to a new version of Windows 10, often caused by third‑party software such as antivirus programs’, or incompatible hardware. The system attempts to undo all changes and revert to the previous version of the operating system.

**Remove applications**

Remove unnecessary or recently installed software that may cause problems:

1. Open Settings > System > Apps & features.

2. Choose the app and select Delete.

3. Follow the on-screen instructions to complete the uninstallation.

Repeat these steps for all problematic software. After reinstallation, the apps should work correctly.

**Disconnect non-essential hardware**

Problems can also be hardware-related. Disconnect non-essential peripheral equipment during the installation of Windows 10, such as secondary monitors, printers, phones, external hard drives and other USB devices. Hardware can be reconnected after installation. In recurring problems, new driver’s or incompatible hardware may be the cause.

**Redownload upgrade files**

Corrupted installation files can also cause a blue screen. Use the Disk Cleanup utility to delete previously downloaded installation files and let Windows Update re-download the files for a new upgrade attempt. Follow these steps to use Disk Cleanup:

1. Search for Disk Cleanup via Start and open it.

2. Select the drive “Windows (C:)” and click “OK”.

3. Choose “Clean up system files”.

4. Select “Temporary Windows installation files” and click “OK” to delete.

Complete these steps and try to perform the upgrade again via Windows Update or create bootable media again with the Media Creation Tool if you are performing an upgrade via USB.