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May 27th, 2021 10:00
Secure Boot OFF is no longer enough
http://nvidia.custhelp.com/app/answers/detail/a_id/3156
Answer ID 3156
| Published 10/25/2012 03:12 PM
| Updated 10/26/2012 02:00 PM
When installing an after-market graphics card into a Windows PC with Secure Boot enabled, the system may not boot.
UPDATE for 2021
There are now 4 bios related settings that must be disabled so that non dell video cards are seen and Dell or Microsoft won't bork you with an update.
SMM Security Mitigation DISABLED
UEFI Bootpath Security DISABLED
Secure Boot OFF
Windows capsule bios updates DISABLED
Translation your non dell GPU will not be seen in device manager and will not display ANYTHING even in F2 bios with ALL HDD Removed and CMOS Cleared.
You will think your GPU is fake or bad when nothing is wrong. Has nothing to do with windows because linux or no hard drives/OS at all will show the same symptoms when you try starting F2 or F12.
Thought my GPU had died and only figured this out using Display port to DVI with DVI to HDMI adapter with card removed. I thought it was DEAD/BAD I use the adapter with onboard because most of my monitors are now either DVI or HDMI very few are actually display port.
BENFEI DisplayPort to DVI
https://www.amazon.com/dp/B01LGITGY0/
DVI Male to HDMI Female
https://www.amazon.com/dp/B07CXY79KR/