NUC6i7KYK windows 7, last bios updated, boot issue

[Alex69]

Hi,

My Nuc started to shut down sporadically (was a problem with power,solved since), and I thought it was a problem with the BIOS.

So I updated to the last BIOS version- > very Bad idea

Now, my NUC don't start anymore, I have the message "reboot and Select proper Boot device"

I controlled in the Bios and "legacy boot" is selected (like it was when I installed windows 7)

I controlled the partition with DISKPART, and looks good.

Tried to repair boot without success.

The worst, as I saw in the release note of this latest BIOS, I can't downgrade.... ??!!!!

does anyone have an idea to solve this problem? Thank you in advance

Alex

[Alex69 · Accepted solution]

Hi

I finally found a solution. I don't know what happened during the bios update but some parameters have been changed.

First to explain, my installation of windows 7 is on a SSD sata. When I installed windows 7 on the NUC6, the intallation created 2 partition, one 100MB system, activ and the other where is windows installed boot, active.

So for those that have practically the same configuration see below how I did to resolve this problem.

First I used a bootable USB drive with Windows 7 which contains the USB3 driver. It's actually a mix of Win10 for booting and Win7 for files. Most importantly think you need to have dispart version 10.0.14393 or higher because bcdboot contains more options than you don't have with version 6.1.7601. My opinion, but I haven't tried, you can also use Windows 10 bootable CD.

After that you started the NUC6 with this boot usb, go to repair, advanced repair and command line.

>Diskpart

>list Disk

>select disk 0       // select (the boot disk)

>list volume         // you should see the partitions

>select volume 0    // select the boot partition, should be normally 100MB and normally no letter assigned

>assign letter=V   // assign a letter, to have access in cmd later. Letter must be a free one, I used V.

>exit

//It's very important that you have access to the main partition where windows 7 is installed, and the volume should be mounted. Then check if you have access to the windows directory. The letter by me was c: and have access to the windows directory.

//Then go to the boot partition (v for me)

>v:

>format v: /FS: FAT32 //warning here you will format the boot partition, if you want to save before.

>bcdboot c:\windows /s v: /f ALL 

// c:\windows location of windows 7, v: the current boot "partition", the parameter ALL (to support UEFI and LEGACY, I tried BIOS then UEFI it doesn't work)

Then exit and reboot, go in the BIOS, select UEFI on, legacy boot-> off, save and exit and Windows should reboot normally.

For info:

Before this fix:

 I tried to boot with a extern CD of windows 7 on USB port-> it doesn't work (no boot, black screen, 2 extern device tested)

I tried also to repair in cmd line:

bootrec /fixmbr
bootrec /fixboot
bootrec /rebuildbcd

without success.I see later that it was doing that on my usb stick and not on the sata disk, then USB stick don't boot.....

hope that can help someone,

regards

[Jean_Intel]

Hello Alex69,

Thank you for posting on the Intel️® communities.  

Due to this product being discontinued, Intel Customer Service no longer supports inquiries for it, I am glad to see that fellow community members have the knowledge and they jumped in and helped. You may also find the Discontinued Products website (https://www.intel.com/content/www/us/en/support/discontinued-products.html) website helpful to address your request.  

You can get the specifications and verify this product's discontinuance status at the Intel® Product Specifications website > Product Status > "Discontinued". https://ark.intel.com/ 

Please keep in mind that this thread will no longer be monitored by Intel. Thank you for your understanding.

Best regards, 

Jean O.  

Intel Customer Support Technician