How to fix no bootable device?

Question

I’ve been trying to fix my laptop for a while now, it either brings me to a screen with a blue box saying no bootable device or a black screen that says no bootable device found, I’ve turned on legacy mode and everything and i’ve entered the numbers into the keyboard after turning on legacy mode and it just brings me to the same black screen that says no bootable device, is there any way I could fix this?

Answer 1

Hello Alexzander. I'm Greg, here to help you with this.

Did the PC come from the factory with WIndows installed, or if it was reinstalled or installed by someone else do you know they correctly installed it to UEFI by booting the media as a UEFI device and clearing all partitions first? If so then there's no need to change to Legacy or CSM mode in BIOS setup as it is properly a UEFI install and something else needs repair.

I will show you how to use the built-in WinRE Repair Mode or bootable media to do all possible repairs for Windows 10, leading up to if necessary doing a Reset or gold standard Clean Install:

https://answers.microsoft.com/en-us/windows/for...

At any time you can rescue your files as shown here:

https://answers.microsoft.com/en-us/windows/for...

Feel free to ask back any questions. Based on the results you post back, I will have other suggestions if necessary.

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