No bootable devices found. XPS 15 9560.

Question

Yesterday I was watching a movie. Today no bootable devices found.

Not sure whether this was due to 1. An update that may have gone askew, or 2. An app that was suggested by /u/DellCares (on reddit) called superfix causing an issue. The app was a means to fix microphone issues I was having, but wasn't working properly.

Now I've been scouting around and no one seems to have had errors recently... Though, there was a similar issue for 9550s: https://amp.reddit.com/r/Dell/comments/50bglj/xps_15_9550_no_bootable_devices_found_after_bios/ In which the fix was going into BIOS and finding bootx64.efi, of which I cannot find (it does not appear on the list). So this may have been deleted.

Anyone have a fix?

I've messed with secure boot, legacy boot and the boot sequence
no errors in diagnostics

skip198 · Accepted Answer

Ah HA! The 1.8.1 BIOS update DID in fact change the controller mode to RAID, so yes, that is almost certainly the cause of my problem! :) https://www.dell.com/community/XPS/XPS-15-9560-BIOS-update-1-8-1-Warning/m-p/6044478#M9056

I hope I am not polluting this thread.......

Regarding my intermittent UNEXPECTED STORE EXCEPTION errors when resuming from sleep, I do now feel confident they have stopped altogether. Just on the very off chance this did help, I remember disabling the "slideshow" in the lock screen, and I also disabled those random little "fun fact" messages. It seems unlikely that this would make any difference though. As I mentioned before, an Intel update (in Windows Update) did come through as well, so maybe that helped. I should also mention that my machine is refurbished - it was not brand new. (I only bought it very recently)

Deerdido · Answer

My reddit link wasn't super clear, but it uses that same method as your above links.

The issue is when I add boot option, there isn't a 'Boot' folder with 'bootx64.efi', on top of this there's no things to tick in the boot sequence.

So the issue must be... Where is the boot manager? and where is bootx64.efi?

LSUFAN51 · Answer

' no errors in diagnostics ' :BigSmile: After quick tests finished in Dell off-line diagnostic (F12 key), I'm assuming you selected Hard drive and then click Thorough Test Mode....  Please check out Hk417a solution in the link below, hopefully it will be a help to you, Solved: No bootable devices found (XPS 15 9550) - Dell ...

LSUFAN51 · Answer

And check out ben.incani post in link above as well

Deerdido · Answer

I've figured this is my direction; though, I'm having another issue and that's to do with the USB. At the moment I only have access to a MAC; and it's been suggested to format to fat32, use unetbootin (with the downloaded win10 iso) and then use that as a flash drive; however, when plugged into my XPS, it doesn't seem to want to be detected after I press f12 on the dell logo. It came up once, but didn't work, and never came up again. I've messed around with the legacy boot, etc. What do you think would be the reason why it's not being detected as a USB?...

LSUFAN51 · Answer

If you answer all my questions as yes, I suggest creating a windows 10 installation media from the link below.You'll need a blank USB flash drive with at least 8GB of space and a good working computer .

Download Windows 10 - microsoft.com

After creating the bootable windows 10 installation media, plug it into the computer that needs to be fix. Please use the F12 key to boot off the flash drive. In the windows setup screen, select Repair Your Computer, Advanced Options and then Startup Repairs.

If Startup Repairs does not get the system to boot back into windows, type the commands in Command Prompt as listed in the link below.

https://www.groovypost.com/howto/fix-windows-10-wont-boot-startup-repair-bootrec/

LSUFAN51 · Answer

I'm assuming you tried changing the SATA controller mode setting to AHCI (from Raid On) or vice-versa as suggested in the link you have posted ? Is the Hard drive or solid state drive detected in the BIOS? You tried resetting BIOS to defaults.

Reset the BIOS to Default Values

Deerdido · Answer

Yep! I've tried all these. Interesting though I"m getting this in the bios system info:

Device Information
M.2 SATA = (none)
Primary Hard Drive = (none)
M.2 PCIe SSD-0 = *insert numbers and letters*
Passthrough MAC Address = *insert numbers and letters*

Not entirely sure what these mean. I have a default sort of specs XPS15 9560, 4K, with the 500GB SSD.

LSUFAN51 · Answer

You're fast with the information. Thanks

LSUFAN51 · Answer

You'll have to change Legacy to UEFI and enable secure boot in the BIOS. The flash drive usually could be booted from the BIOS but as you have mentioned, certain components are missing, therefore I'm hoping you can boot the flash drive from Dell Pre-boot menu -F12 key). Just to sure you're performing the correct steps to get into Preboot menu:

1. Power on system, plug the bootable windows 10 installation media into a USB port

2. Power off system.

3. Power on system, quickly start tapping F12 key continuously until you see Preparing one time boot menu in the top right corner of the screen.

4. At the boot menu, select the windows 10 installation media under UEFI BOOT

5. In windows setup, select your keyboard language. At the Choose an option screen, select Troubleshoot and the Repair Your Computer.

Keep in mind, the Repair Your Computer tool is in the Microsoft windows 10 creation media.

Deerdido · Answer

Ok, thanks for the photos. I can't get to this screen yet. I just plugged in another USB (with an unzipped dell recovery - which said 'couldn't detect windows', or something to that effect), which was detected by my laptop, so I'm gonna try that one as I don't actually have any access to windows computers... lol.

LSUFAN51 · Answer

' Nothing appears in the F12 menu under UEFI Boot ' If possible, try using the USB in another computer to see if it will work or create a windows 10 flash drive from the Microsoft website or from Dell website, see link below).  Windows 10 Bootable USB Flashdrive (Official Dell Tech Support) https://youtu.be/WwlY-os0KyA?list=PLdLDGmnHB07NVpbsbTGeiW-NLjpVZufxB

LSUFAN51 · Answer

The Repair Your Computer will give you the necessary tools to get windows 10 up and running again without losing your pictures, documents and other important stuff, see image below).

By the way, these are images I got off the internet.

Deerdido · Answer

Yep these don't work unfortunately. Nothing appears in the F12 menu under UEFI Boot, unless I go into the BIOS and 'load a boot', of which once I restart and go to the F12 menu again and click the boot I created, it comes up with... 'System was unable to boot. No bootable devices found.'

However could you clarify what you mean by 'Repair your computer tool' Windows 10 creation media, means?

My USB is an unmounted windows 10 x64 ISO, which I downloaded off the website, if that helps. The Creators fall edition was unselectable; and I do recall that my Laptop has the Falls Creators edition.

LSUFAN51 · Answer

The Repair Your Computer tool is in the Microsoft windows 10 installation media, see image below). You'll be able to use the option to Repair Your Computer or reinstall windows 10.&#xa0;

XPS

No bootable devices found. XPS 15 9560.

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