How do I fix this

Select Save & Exit → Save Changes and Reset in Aptio Setup Utility; if the computer returns to Aptio, check whether the Windows drive and Windows Boot Manager are detected rather than repeatedly trying to exit.

1. Exit Aptio normally

1. Disconnect any USB drives, external disks, memory cards, or DVDs.
2. In Aptio, open the Save & Exit tab using the mouse or arrow keys.
3. Select Save Changes and Reset or Save Changes and Exit.
4. Confirm Yes.

The computer should restart into Windows. If it immediately returns to Aptio, continue below.

2. Check whether the Windows drive is available

Open the Boot tab and look for either:

• Windows Boot Manager
• The SSD or hard drive containing Windows

If Windows Boot Manager appears:

1. Set it as Boot Option #1.
2. Return to Save & Exit.
3. Select Save Changes and Reset.

Do not randomly change Secure Boot, CSM/Legacy mode, or erase/reset security keys.

If neither Windows Boot Manager nor the SSD appears:

1. Open Advanced, Storage, SATA Configuration, or a similarly named page.
2. Check whether an SSD/HDD is listed.
3. If the drive is listed and SATA Mode is already AHCI, leave it unchanged initially.
4. If the original Windows drive was removed or replaced, reinstall the original drive. A closely matching Aptio case was resolved by using the original Windows drive and checking whether the configured SATA mode allowed it to appear in Boot Priority.^1^

Changing SATA mode on an existing Windows installation can prevent Windows from starting. Only test another available mode such as Intel RST if the machine was originally configured that way or the manufacturer directs you to do so.

If the SSD is completely absent from every storage page, power off the computer and contact STGAubron or the seller for warranty service. That points to a disconnected or failed drive rather than an Aptio exit setting—especially since the computer was usable only briefly. Avoid opening a new computer if doing so could affect its warranty.

3. If the drive is detected but Windows will not start

Create Windows 11 installation media on another working PC:

1. Use a blank USB flash drive with at least 8 GB; creating the media deletes its contents.
2. Download and run Microsoft’s Windows 11 Media Creation Tool.
3. Choose Create installation media and select the USB drive.^2^
4. Insert it into the STGAubron computer.
5. In Aptio, place the USB device first in the boot order, then save and restart.
6. At Windows Setup, select Repair your computer, not Install now.
7. In Windows Recovery Environment, try the least destructive applicable options first:
   • Troubleshoot → Advanced options → Uninstall Updates, if this began after an update.
   • Troubleshoot → Advanced options → System Restore, if a restore point exists.
   • Troubleshoot → Reset this PC, only if the earlier options fail.

A BitLocker recovery key may be required to access recovery options.^3^

Use a clean installation only as the last resort because it removes personal files, applications, settings, and manufacturer customizations.^4^

References

1. How to exit the aptio setup utility when it shows no boot priorities - Microsoft Q&A
2. Create installation media for Windows
3. Recovery options in Windows | Microsoft Support
4. Reinstall Windows with the installation media