[NAME]  Secure Boot OFF allows non dell cards. [URL] [NAME]-Chris M  This should probably be a sticky at the top. LEGACY Booting on newer systems is NOT EVER an option. Newer Dell Systems and other OEMS with CLASS 3 Bios will be Unable to Boot to Internal Boot Device in Legacy MBR Mode EVER.  This is why you cannot install 32 bit os or Windows 7 even in GPT CSM mode.  Its 64 bit OS and Windows 10 only from now on.  You may not like it but you do not have a choice.  Older Models Like Optiplex 9020 will boot legacy but newer systems past 6th Gen will NEVER boot legacy EVER. [URL] There is no more CSM or Legacy MBR booting on newer systems past Skylake 6TH generation Core Processors. This is enforced by CLASS 3 bios with NO legacy booting internal devices and NO CSM. Its not Just INTEL its also AMD and NVIDIA etc. This was FORCED by Microsoft and INTEL and AMD and NVIDIA. Unsupported hardwareYour PC uses a processor that is designed for the latest version of Windows 10. Because the processor is not supported with windows 7 together with the Windows version that you are currently using, your system will miss important security updates. [URL]   [IMAGE]GAME OVER [IMAGE][IMAGE][IMAGE]    
I bought an R10 without the graphics card thinking that I can just use one of my old ones.  Asus 1050i .  It's very snug but it fits.  Problem.  After putting in the card, it won't post, boot or anything.  I have reseated the ram, gpu, re connected all the power cords, sata cords etc etc.. nothing helps.  Couple of things that I have noticed.  1.) Graphics Card's fan turns off after few seconds of running and then blinks slowly red.  2.) Psu 's fan isn't running regardless how long the pc is left on.  (It's 1000w version) What do you guys think is the problem here and what can I do to get this machine working like it should? 
Aurora R10, no graphics card, ASUS 1050i, no post