[Samsung Series 7 NP700Z5C] Laptop always restart after the Samsung logo

Hi,

I'm in trouble with my laptop because I want install the Linux on my laptop in dual-boot with Windows 10. So for that, I created a new partition on my HDD and I did the following changes on the Bios:

• Secure Boot: Off
• OS Mode Selection: CSM OS
• Boot with USB

The problem is after I saved this on the bios the PC is always restarting after shown the Samsung logo and I can't access to the BIOS (I tried F2, F10, ESC unsuccessfully). I can see on the screen with samsung logo the following instructions:

• Press F2 to setup
• Press F4 to recovery

but nothing happens. I tried with a USB driver with Linux but the PC restarts always, I tried with an CD with Ubuntu and another with Windows 8 and in this case after the logo I saw a black screen and after few seconds the PC restarts.

Anyone can help me? Will I need reset the Bios config? If yes, How I can do that?

 

Was UEFI enabled when you installed Windows 10? If so, then changing the BIOS to CSM will effectively disable access to the HDD. UEFI / CSM appplies to the whole HDD and not to individual partitions. So, if UEFI was previously enabled then re-enable it and see if the system will boot.

John

 

The problem is that I can't access to the Bios to re-enable the UEFI. Any keyboard key doesn't respond to access to the BIOS. This is my problem, how I can access to BIOS if with F2, F10, ESC, etc I can't open the BIOS.

Any suggestions?

 

One of the unbricking solutions should work for you. See this thread.

John

 

Thanks for link. I didn't find this thread. I tried some of the solutions on this Thread but anything works.

Is there anything more that I can do?

 

You will have to wait until someone with a better understanding of the problem and possible solutions comes to this thread.

Do you know whether you had updated to the most recent BIOS for your Z5C (it will be P??AA? if the computer was shipped with Windows 7 or P??AB? if shipped with Windows 8)? Samsung had released various updates which had eliminated many of the bricking problems.

John

 

Hi vm_darkgreen, sorry to hear about your problems.

As John pointed out, the reason you cannot boot is most likely that you changed from UEFI mode to CSM mode, but your disk is still set up for UEFI mode (using so-called GPT layout) which cannot be booted in CSM mode.

The reason you cannot get into BIOS is most likely that the data tables used by BIOS (so-called NVRAM) were corrupted, which unfortunately happens on some Samsung models.

You need to clear NVRAM in order to get the computer working properly again. We have a thread specifically discussing that. It is listed in the Bricking section of the Samsung Forum Sticky list (on top of the Samsung Forum) with the title "Unbricking when F-keys don't work to enter BIOS" (or something like that). You want to read that thread.

You need to boot an external device in order to clear NVRAM. If you disconnect the HDD, that will (usually) force the system to look for an external boot device, such as a USB flash drive containing Windows PE. Again, this is discussed in that thread.

Alternatively, you can use another computer to repartition the HDD with MBR layout (as required by CSM mode) and put a basic Windows installation or WinPE on it. That, too, is discussed in that bricking thread.

Please keep us posted about your progress. If you post in the bricking thread, there is a better chance that some previous bricking survivors will see it.