boot device not found No bootable devices found

[ArtHav0]

Hi, so i just upgrdaded my cpu and motherboard to a gigabyte b660 gaming x ddr4 and the Intel i5-12400. I reused my old drives, its one m.2 from samsung and to sata ssds. I use the m.2 ass the boot drive. The problem is that in the Boot squense tab in the BIOS it says "No bootable devices found" But it recognises my m.2 drive and my sata drives when i look at whats connected.

 

The reason i upgraded was because my psu and motherboard died just recently. Could it also have killed my ssd?

 

Anyone know how to fix it? If you need more information just ask.

[GuiltySpark_]

I need to just write this down so I can copy/paste it since this exact thread pops up so often. 

 

Your old Windows install was likely on an MBR drive and the new board likely has CSM/Legacy boot mode disabled by default, as it should. You can either try enabling that OR, as is highly suggested, keep CSM off and re-install Windows. If you didn't properly prep that old Windows install before removing it from the old system, you're likely in for a few issues even if you do get it to boot up in the new system. 

[paddy-stone]

It could be a very frustrating time trying to get your old windows install working properly. I personally almost always opt for a re-install, unless the change was minimal, like from a Ryzen 2600x to a Ryzen 3600 etc.. where the changes are so minimal that the drivers etc should be mostly the same.