[SOLVED] Fast boot is turned on automatically every time I boot my computer Windows 11 AMI bios

[RudieV]

I upgraded to Windows 11 and had to change the bios settings to secure boot and disable fast boot. It worked well the the first week but now every time I turn on my computer Windows does not start up and get stuck in the bios. Fast boot is somehow switched on again and after changing the settings, saving, the settings and reboot Windows boots normally. I already searched the internet and found a setting that disabled the Windows fast boot setting but still it persists.

 

[Colif]

Welcome to tom's

what motherboard do you have?

bios settings shouldn't reset on startup in that way.

how old is it? perhaps the cmos battery needs replacing?

 

[RudieV]

I have an Asus motherboard with AMI bios. The computer is 1.5 years old and don't think the battery should be replaced already. This only started after upgrading to Windows 11.

 

[Colif]

Windows can't change BIOS settings.

Are you running something like AI suite?

it could be altering the settings after you change them in bios.

 

[RudieV]

No, I have no additional software installed., just Win11. I already tried resetting to factory settings and saving but did not help either. I might try replacing the battery anyhow. It will reset the bios and perhaps it is stuck in a loop . Never done this before, never had problems with empty bios batteries .

 

[Colif]

You mean Fast boot in bios and not Fast Startup in windows? they aren't same thing, just checking?

fast startup in windows should be off in win 11 by default for ssd/nvme

 

[RudieV]

I mean fast boot in the bios. I thought there might be a connection to the Windows fast startup but, like you said, there isn't any.

 

[Colif]

which motherboard as I can go see if I can find anything similar

 

[RudieV]

It is ASUS Prime Z390P. BIOS version 2820. I updated the BIOS a few months ago in the process of switching to Windows 11
Thanks in advance

 

[Colif]

When you reset BIOS, do you go to save & exit screen and pick "load optimized defaults"? page 2-47 here - https://dlcdnets.asus.com/pub/ASUS/mb/LGA1151/PRIME_Z390-P/E15011_PRIME_Z390-P_UM_v3_web.pdf

the win 11 settings the bios update changes turn on ppt and secure boot, I wouldn't expect it to turn on fast boot as well.
strange to see an Asus mb without armory crate.

 

[DRagor]

Might be worth updating BIOS to 3004 as it claims support for Windows 11 on default values (so it should have Fast Boot disabled by default)

 

[Colif]

True, could just be a glitch with the current bios.

 

[RudieV]

Thanks for all your replies. I upgraded the bios. After the restart Fast Boot was still enabled. Now I disabled it and on restart it took a bit longer but Windows started up. let's see if it stabilises and also will work tomorrow.

 

[RudieV]

Well, instead of waiting until tomorrow. I shut down the computer. Unplugged for 10 seconds and rebooted and alas, the fast boot was enabled again. I got inspired by your comments and saw under the tools setting Profiles and tried to created a profile with Fast boot disabled and set it to No 1. I am not sure if I did it the right way. Will keep you posted.

 

[DRagor]

Can you show us if possible a picture what kind of error (if any) BIOS shows during start?
To be clear, if you disable it and do save&exit from BIOS then Windows boots fine? But only one time?

 

[Colif]

I wonder if it is CMOS after all. Removing power from PC makes it forget. Sounds like CMOS is not saving settings.

In manual, fast boot is enabled by default so if its forgetting on shutdown, its going to go back to defaults.

 

[RudieV]

Hello again, you were right. I replaced the battery. Had to change the fast boot setting again but after doing that and switching off, power off for 20 seconds, booted the computer and now Windows started as regular. Thanks for your time and advice!

 

[Colif]

i wish all problems were so easily fixed.

Glad to help