How To Fix Asus No Boot Device, Boot Device Not Found, No Bootable Device,

If your Asus Laptop is stuck at a No Boot Device, Boot Device Not Found, No Bootable Device error, or other boot-up issues, this video will help. Check the FAQ's bellow if you have a question or leave me a comment and I will help :)

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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 Restore or Repair options in BIOS?
If no, then reinstall the Operating System.

[PC_Monkey]

I'm trying to move the easier hardware stuff there so that I can focus on the more in depth troubleshooting and diagnostic videos here :)

[captnsloungestudios]

There is one thing missing from this video. ASUS has done a rather dumb thing! My son just installed an ASUS TUF Gaming Z690-Plus WiFi D4 ATX Gaming Motherboard (with Intel core I7 12 Gen). Everything installed ok, except the BIOS could no longer see a "Boot Device". (We panicked!) To cut a long story short, we discovered a setting called "Compatibility Service Module". This option is defaulted to "Off", which tells BIOS to look for a boot device that's on a M2 drive. So, if you run into the above issue after installing a new MB and your boot device is a standard SSD / Hard drive you MUST change this setting. (Why the bios is not smart enough to check all drives for a boot sector is baffling to me).

[luisc.padilla]

I love this guy so much. So far, he has helped me 4 times with fixing my laptop in the last year. Thank you for existing Sir!

[Nolendo]

Just got an i7 10700k and an ASUS Z490 and had some older drives. My BIOS is newer so it wasn’t exactly like this, but this still gave me some pointers on where to look and after switching one option from UEFI to Legacy, I was up and running. Thanks for everything.

[Fabio-zcbs]

Bro, you saved me. I mean, I knew I had to try changing it to legacy but the crucial information I didn't know was that CSM and Legacy are the same thing. This saved me a lot. Thanks

[bombshellsandtrinkets]

Omg THANK U!! MY LAPTOP fell, and I watched about 8 videos that didn't work .. but yours finally did !! Cheers .. I was almost in tears ! So happy now

[psqueff]

Saved me hours of waiting for someone else to fix my problem. It was legacy for me. Thank you so much!!

[ethanhernandez]

Omg. I feel like I owe you money or a hug or something. The uefi changed fixed my issue. Your doing the lords work!

[grantloomis]

Thanks, PC Monkey! I updated to the latest BIOS and it couldn't find a bootable drive. Enabling CSM got it working again!

[sceadumor]

Computer used to work then aio Pump failed after I swapped AIO Pump the computer started up to bios and couldn't find boot device spent 2 WEEKS trying to fix. The Bios even recognized the SSD but not as a boot device. No article or video I read or watched even MENTIONED changing boot method feom UEFI to Legacy. Lo and behold this was the fix. Thank you so much for your help!!!

[pauloticks]

Thank you! My options were a little different but you put me on the right track and got it to boot from the harddrive. Thanks so much!

[luffymax]

It was about 2 hours looking for the solution on YouTube tel I came here, and guess what was the problem? It was the date 3 minutes earlier than it should be. 😆 How funny, and I was thinking my lap is dead for sure. Anyway thanks bro you are a live saver.

[biddle]

You are a champion. And thank you for explain this in the most simple and easy to understand way possible. 10 stars!

[caydenchung]

BRO UR ACTUALLY AMAZING IVE BEEN TRYING TO FIX THIS FOR A WHOLE WEEK AND JUST BY CHANGING IT TO LEGACY IT FIXED TYSM U DONT KNOW HOW HAPPY U MADE ME RN

[ultima]

Thank you, changing UEFI to Legacy helped.

[AZetorA]

Holy CRAP!!! You just saved my life!!! I upgraded the motherboard along with CPU and ram, but with the windows 10 in the old drive. Try to fix it but nothing worked, until the CSM/UEFI Swtich thing worked like MAGIC!!! THX

[williamkline]

Thank you, On the Newer Asus EUFI utility I had to go to the CSM Compatibility and enable CSM. The defaults were on legacy as soon as I enabled CSM. It worked! My computer now boots. Thank you again.

[lightfusegetaway]

GOLD. Tried to boot from an old flash drive and my computer suddenly wouldn't boot into Windows. Your advice saved the day. THANK YOU!

[gustavnilsson]

Thank you sir! Been searching online for a few hours, you're video finally fixed my problem, best of luck to you man! :D

[AnthonySatter]

I messed up doing something to my BIOS. Luckily I didn’t do anything permanent, but your video walked me through fixing it. I almost lost a couple days worth of work. It’s all backed up now but wow. You saved me. Thank you.