How To Fix Asus No Boot Device, Boot Device Not Found or Installed Error Fix

Use this video to help you troubleshoot why your Asus computer is stuck at a variety of Blue Screen errors, also know as the Blue Screen of Death (BSOD) or a Preparing Automatic Repair error at startup and will not boot up correctly to Windows. Check out the FAQ's and Related Links below !!

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How To Install Windows 10:    • How To Install Windows 10 on Asus Com...  
How To Install Windows 11:    • How To Install Upgrade to Windows 11-...  

FAQ's:
Q: I cant switch between Legacy/CSM and UEFI or switching didn't help.
A: If you cannot find how to switch the setting in BIOS or if switching did not help, then can you find any Recovery or Repair options in BIOS? If not, I would then try to reinstall the Operating System (OS) as seen here;
How To Install Windows 10:    • How To Install Windows 10 on Asus Com...  
How To Install Windows 11:    • How To Install Upgrade to Windows 11-...  
If the install is successful, we know the issue was OS related and is now fixed. If the install will not complete, perhaps its due to the HDD being bad. I would then replace it and install the OS to the new one.

Q: What if Windows does not install and keeps erroring out?
A: If Windows won't install correctly, then we know that the Hard Drive is bad. Replace it as seen here;    • How To Replace Asus Computer - HDD (H...  . Then, install Windows onto the new one.

Q: Will changing those settings in BIOS erase any data?
A: Changing those settings in BIOS will not delete any data from your hard drive :)