[NAME]  "A12 is the only version on official Dell support. If there were a beta A14 Dell had it removed."  This is incorrect for both statements. Telling the user that dell removed a beta bios is not helpful. Dell does not post "beta" bios updates. X51 R2 if it has SECURE BOOT in bios must be turned OFF to allow a non Dell card to be seen and the system to post. Clean install of windows 10 will work fine with a 1060 on R2 or R3 with 330W power brick and correct bios settings including F2 SATA OPERATION AHCI. I highly recommend getting an OEM WIN10 DVD. Once these are gone they will never be available again ever.  All WIN10 downloads will be removed after OCT 2025.  Microsoft cancelled the Windows Refirbisher Program so no more OEM copies can be found. 32 Bit or 64 bit windows is a specific DVD for OEM windows. Retail Windows 10 flash drives only work on USB2 ports.  If your model has no USB2 ports there will be an error installing windows from flash drive.  Which is why I recommend USB 2.0  16 or 32 gig MAX flash drives because FAT32 is REQUIRED for a WIN10 USB installer.  Flash drives detrap after one year or less which Is why I recommend downloading windows 10 ISO files and saving them to an external USB HARD DRIVE NOT SSD NOT FLASH. [URL] No Post with Secure Boot ON in F2 BIOS [URL] The other requirement is 330W power brick. This is also why they added AWCC update for windows 8. [URL]   [URL]   [URL]        
 Hi All I just tried to upgrade my X51 R2 (Bios A12, Motherboard: 0PGRP5) with a Nvidia Geforce GTX 1060 Founders Edition. Installation was not a problem. The PC will start up, but won't recognice the card. From what i read in the forums i suspect the lack of the A14 Bios-Version, but am not sure how to update since support-assist doesn't show any update beyond A12. Do you have any Idea what might be missing? Thanks a lot.    
X51 R2, GTX 1060 upgrade failed