BIOS missing legacy boot needed for video card install

[runfastman]

I am trying to add a video card to my machine, the instructions tell me to disable secure boot and enable legacy boot. https://support.hp.com/us-en/document/c03653200

However, it looks like the new version of the bios is missing the Legacy boot option.

https://h30434.www3.hp.com/t5/Desktop-Boot-and-Lockup/not-able-to-enable-legacy-boot-missing/td-p/58...

When I first installed the video card, it had a constant beep, until I disabled the secure boot. Now the computer turns on and seems to start up, but there is no display from either the onboard or the new video card.  How do I enable legacy boot, I am tempted to install an old version of the bios, but kind of risky.

Complaint. - Not impressed with the special power supplies now used by HP, no video card power cord by default. I guess you have to special order that. Probably won't buy an HP again because of this.

[BeemerBiker]

What model TP01 do you have?  The few I looked at have only 180watt power and usually not capable of running a graphics cards.  If you obtained one of  SATA/ MOLEX to PCIe adapters it will not work on a 180 watt unit

Many HP systems automatically disable the on-board graphics when connecting a graphics card.

What model graphics card did you add?

Disabling the secure boot means you are booting in legacy mode.

HTH

[runfastman]

It is the TP01 1036.

I used separate power source for the video card to test as it is a 180 watt supply.

I have a couple of video cards sitting around I tried, both an MSI N650 and Asus geforce 9600.

[WAWood]

@runfastman 

The PC must boot using the same mode in which Windows was installed -- and since yours was in UEFI mode, if you were to Force that to Legacy mode, your PC would not longer boot.  So trying to force this will not work.

[Prométhée]

Hello
try to search in the community
There are a few examples, and unfortunately we see that some older graphics cards don't seem to be able to work with newer computers.

[runfastman]

So how would you install any video card if you need it in legacy mode to do so but can't boot.

[Prométhée]

Hp does he seem to say anything good ??

HP Desktop PCs - Computer Does not Start After Installing a Video Card (Windows 10, 😎 | HP® Custome...

this is interesting :

https://h30434.www3.hp.com/t5/Gaming-Desktops/OMEN-HP-880-051ng-gt-RTX-2070-Super/td-p/7920661

"I went into BIOS, deactivated "Legacy Mode" and activated "Safe Boot" (as I had to do the opposite before for the RTX 3060 Ti to work with the PC first time I swapped cards) and the beeps are gone."

From what I remember, having read here before, sometimes there is no need to change anything
it obviously depends on the graphics cards

https://h30434.www3.hp.com/t5/Desktop-Hardware-and-Upgrade-Questions/Broken-GPU-need-to-install-a-ne...