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Exams220-802Questions#841
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220-802 · Question #841

220-802 Question #841: Real Exam Question with Answer & Explanation

The correct answer is D: The hard drive operation setting in BIOS needs to be changed from AHCI to IDE.. When a new motherboard is installed, the BIOS resets to factory defaults, which often sets the SATA controller to AHCI mode. If Windows 7 was originally installed while the controller was in IDE (ATA compatibility) mode, the OS does not have the AHCI drivers loaded and triggers a

Question

A technician just finished replacing the system board of a user's laptop. Now, every time the unit attempts to boot into Windows 7, the laptop goes through an automatic restart midway through the OS boot screen process. Which of the following MOST likely needs to be fixed?

Options

  • AThe optical drive needs to be moved lower in the boot process, below the hard disk.
  • BThe BIOS version on the motherboard is stock, and needs to be updated to the latest release.
  • CThe technician forgot to enable the SATA controller in the BIOS.
  • DThe hard drive operation setting in BIOS needs to be changed from AHCI to IDE.

Explanation

When a new motherboard is installed, the BIOS resets to factory defaults, which often sets the SATA controller to AHCI mode. If Windows 7 was originally installed while the controller was in IDE (ATA compatibility) mode, the OS does not have the AHCI drivers loaded and triggers a Blue Screen of Death (BSOD) - which auto-restart hides. Changing the BIOS SATA mode back to IDE matches what Windows expects and resolves the boot loop. The optical drive boot order, BIOS version, and SATA controller enable/disable are not the cause of this specific symptom.

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