Can't enable tpm/secure boot with gpu

[Helpful Tech Witch]

(in motherbord cuz bios)

I'm trying to enable tpm and secureboot, but am having issues. 

If I either: enable a tpm or update the platform keys, I have to reboot before I can enable secure boot.

So i do that, but it just gets stuck on boot (that's the led that stays on)

But if I do this with my igpu, and the dgpu removed from the system, it’s fine.

 

could this be linked to my modded bios on th gpu?

Specs:

b250m bazooka

i5 7400

rx480w/ bios mod for oc and making it report as a rx580

[Levent]

What was your current windows install? UEFI or legacy? If its the former, then its your vbios being not compatible or lack of uefi gop.

[Helpful Tech Witch]

2 minutes ago, Levent said:

What was your current windows install? UEFI or legacy? If its the former, then its your vbios being not compatible or lack of uefi gop.

It should be Uefi, it was installed on a modern system. I’ll try to clear cmos and boot with uefi only

[Helpful Tech Witch]

1 hour ago, Levent said:

What was your current windows install? UEFI or legacy? If its the former, then its your vbios being not compatible or lack of uefi gop.

No, hm..... I'll try installing it with uefi only.

[Helpful Tech Witch]

3 hours ago, Levent said:

What was your current windows install? UEFI or legacy? If its the former, then its your vbios being not compatible or lack of uefi gop.

Ok, when uefi only mode is on: sometimes I can boot, but it takes forever

I can not get into the bios with the gpu installed.

What the fuck is happening?

[Levent]

7 hours ago, HelpfulTechWizard said:

Ok, when uefi only mode is on: sometimes I can boot, but it takes forever

I can not get into the bios with the gpu installed.

What the fuck is happening?

Disable "fast boot' in bios.