Firmware · critical

How to fix System stuck in loop into UEFI/BIOS

Error code: UEFI-BOOT-LOOP

What this error means

Every time the PC is started, the system automatically redirects to the BIOS instead of Windows. It's also often linked to change SATA mode (AHCI/RAID).

Updated

Before you begin

Save open work and back up important files. Use instructions for your exact device and software version. If Windows cannot start, see the startup guide.

Work through these checks

0 of 3 complete
01Check the boot order
  1. Check the boot order
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

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02Turn on CSM (Compatibility Support Module) if you have an old MBR disk
  1. Turn on CSM (Compatibility Support Module) if you have an old MBR disk
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors
03Repair the boot sector with the bcdboot command
  1. Repair the boot sector with the bcdboot command
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors

Possible causes

  • Corrupted Windows Boot Manager
  • Change SATA mode (AHCI/RAID)
  • Corrupted system disk