How can you solve it?
Nobody wants it to encounter errors, however, some complex issues could happen once it goes wrong.
A restart seems to not solve the issue.
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Fortunately, some workarounds here can get you rid of the predicament.
Do you experience the issue of AHCI BIOS not installed when starting up Windows 11/10?
This tutorial covers some effective ways.
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#1.
#2.
Step 1: Boot up your Windows and press a key like F2, Del, etc.

to dive into the BIOS menu.
How to make your Windows 11 computer boot into BIOS options?
This post offers some easy and quick methods.
Step 2: Load optimized defaults and confirm the operation.
The menu could be different as per PC brands.
Then, reboot the PC to see if your issue is solved.
#3.
Step 1: Boot up your box.
Step 2: get into the BIOS menu and go to a section likeBoot Optionsor a similar one.
Step 3: Configure the SSD or hard drive as the boot drive.
#4.
Clear CMOS
CMOS is a battery-powered chip on the motherboard that stores the BIOS configs.
If your PC is stuck in BIOS, clearing CMOS could help a lot.
For clearing CMOS, you have two options use the battery method or via Jumper.
To know details, refer to our previous post How to Clear CMOS?
Focus on 2 Ways.
#5.
Step 2: fire up the computer case to locate your RAM modules.
Step 3: Remove one RAM module at a time and reboot the PC.
Test each RAM to identify the faulty one.
#6.
Update BIOS
If your PC uses an outdated BIOS, updating it could solve PC stuck in BIOS.
Note that the update could bring some risks and ensure you take necessary precautions and follow some instructions.
Get it and run it on a working PC to get a bootable edition, then start data backup.
Here is a guide How to Back up Data without Booting Windows?
Easy Ways Are Here.
If you are plagued by this annoying issue, follow the step-by-step guide to address it.
For this, get MiniTool ShadowMaker.