Samsung NP900X4D, all boot devices disabled

Hello,

I turned off all boot devices in BIOS except one (one of the USB...).

I did this because i could not change the boot device order.

Now the laptop turns on 1 sec, then turns off, and does this non stop.

I didn't manage to get back to the bios (i tried all F1-F12, ESC, DEL...). I think a bios reset would be the best solution. What do you think?

And can i do a BIOS reset on this Samsung series 9?

Sorry for the meddiocre english.

BR

 

See the first section of this post for discussion of various BIOS-related problems.

If you still have the original SSD in place then Fn+F10 should give you a list of boot devices.

John

 

Hello,

The Fn-F10 didn't work. I unplugged the CMOS and the batterie but the bios didn't reset neither.

All boot devices are disabled and the fast boot is still on. No chance to get back to the bios by the F1-10,ESC or DEL.

I really don't know what to do.

Is there a way to force boot a laptop on a CD or USB?

Thank you very much and br

EDIT: I tried the 48h CMOS reset too.

 

If you have still got the previous Windows installation working then you can turn off Fastboot in (Easy) Settings.

After a few months with few of this type of problem we now have several all at once. See this thread, for example.

John

 

The most common reason why users are unable to boot USB or DVD devices on Win8 models is because the media they are trying to boot is not UEFI compatible: In the case of USB sticks, they have to be created as GPT with a FAT32 partition (UEFI cannot boot NTFS). The commonly used Microsoft USB/ISO tool does NOT work to create UEFI compatible USB sticks. Rufus is a better tool (Google it). Or just create it manually, as described in this guide in our Windows forum.

The next most common reason is that SecureBoot is still enabled in BIOS, which limits it to booting only signed operating systems (such as the Win8 installation on the SSD/HDD). Or that Fast BIOS/Boot is still enabled, which prevents booting from external devices (USB or DVD).

At least on my series 7, disabling Fast Boot in (Easy) Settings only affects the Samsung Boot Optimization feature, whereas the Fast BIOS/Boot feature must be disabled in BIOS (F2). Maybe that is different on the Series 9?

But in your case, since you got locked out from the BIOS (F2), AND since you are unable to boot anything that could give you a backdoor into BIOS (Win8 Setup or your Win8 installation on the SSD), you may effectively have a bricked computer. In that case the only solution is to have Samsung fix it, which they do by replacing the motherboard.

But before concluding that, please make sure your USB installation media is properly created (GPT and FAT32). And study the thread linked by John (note that the cases on the first few pages are somewhat different from yours). In particular, try unplugging the SSD and see if that allows you to boot an external device. That will allow you to enter BIOS through the Repair options with your Win8 USB stick.

Do know that you most likely have a huge amount of reading and work ahead of you, with no guaranteed result. I say this, not to discourage you, but so you can consider whether it is worthwhile, compared to contacting Samsung for repair.