The “ACPI BIOS FATAL ERROR” BSOD (Blue Screen of Death) may appear when the Basic Input / Output System (BIOS) detects a malfunction in the computer hardware or a problem with the installed device driver. The faulty component forces the system to reboot, which may result in the loss of unsaved data. This BSOD error is sometimes referred to as a Stop message or Bug check, and usually appears when the BIOS detects a fault in the hardware, such as overheating of components and a malfunctioning power source.

This BSOD error is also known as “ACPI_BIOS_FATAL_ERROR” and “Windows STOP0x000000E0. Some Windows XP users have reported this BSOD error, which normally appears on the screen during system installation

To fix the “ACPI BIOS FATAL ERROR” BSOD error, you should check the computer for possible causes of overheating such as blocked vents and malfunctioning exhaust fans. You can do this by putting your hands near the vents at the back or at the side of the CPU to check for the airflow, which should be continuous and not hot on the skin. Poor airflow and blocked vents can increase the internal temperature of the system, which results in the BSOD error. Perform a similar check on the fan installed in the power supply to ensure that it is functioning to prevent overheating of the power source components.

If the fans are working properly, the BSOD error may be due to a defect in the memory, the CPU, or other newly installed hardware. In this situation, you have to recall any recent changes in the system such as newly installed applications or pieces of hardware. Verify installation of video and memory cards, which should be securely fixed in the allotted slots, and tighten connections for the disk drive cables. If the BSOD error persists after performing these checks, employing a diagnostic disk will help in identifying the faulty component.

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