Why does the operating system not start?

[#1]

Question

Why does the operating system not start?

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Answer

If your device can be switched on but the operating system does not start, there is usually a software error:

• If the settings in the BIOS have been changed, the correct boot sequence must be set so that the system starts properly.
• If your system can still be started, load the last restore point and reset your system to a working state. You can access this directly via the search bar by entering the word: restore point.
• Restoring the delivery state helps to correct any software problems. To do this, reinstall the operating system and perform all updates.

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The information in this article refers to:

• All-In-Ones
• Netbooks
• Notebooks
• PCs
• Tablets
• Smartphones

• YHYBZA (IRIS-Symptom-Code_71A)
• YBYBZF (IRIS-Symptom-Code_11F)

ChangeLog:

• 2025-05-06 / Version 3.0
  [add] footer: Changelog section
  [edit] footer: Review-date
  [edit] teaser: Text (more detailed)
• 2024-04-22 / Version 2.0
  [add] footer: NL-version
• 2024-10-10
  Review (no changes)
• 2024-04-17
  Initial version

Article in other languages:

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Review Date: 2025-11-06