New Dell inspiron 15 5000 series Laptop not booting

Recently purchased a new Dell Inspiron 15 5000 series laptop. Turned
it on and screen read no boot device detected. Looked in the hard drive
with a utility program and saw that the operating system (windows 10)
was there.Directions were in French and some English and not specific
as to how to get the operating system to come up properly. Finally
figured it out - Started computer and when the Dell logo came on I pressed
F12 - This took me to the boot sequence section - Next I used the arrow
keys to scroll down and opened the 'change boot mode settings entry' at
the bottom and changed UEFI to ON. Left the Legacy entry to OFF - (not
sure if this made any difference in the outcome). You can always go back
later using F12 and turn UEFI off to get the original boot sequence selection
back. Next I scrolled up using the arrow keys and highlighted the 'Windows
boot manager' selection under UEFI and then pressed Enter.Laptop went
through the setup program and unlocked Windows10 on the hard drive and
set it up on the computer.Now it starts and works as normal.Hope this post
helps you figure yours out if you have this type of problem! Also please read
2nd post on this further down this page.

 

Thanks for sharing! That's a thorough post!

I have yet to upgrade to Windows 10. I've heard that this OS is prone to booting problems. Didn't think such issue would come up right out of the box

 

I'm not sure if this was a problem with my computer specifically, or that's
the way they come. Maybe the computer enters the setup program on the
first power up on it's own.As stated in the first post the directions were
almost all in French - not able to read - maybe what you needed to do was
actually in the French directions - (such as selecting F12 when the Dell logo
came on and going through the steps in my first post).
Anyways, another thing about this: The setup program on these new
computers is a way for a person to register and unlock the windows 10
copy (which was on my hard drive) with Microsoft and set it up for normal
use. At first I thought I had to buy a copy of the Windows 10 operating
system separately because nothing came up on the first power up...