Question GPU LED problem

[AnTuA]

spec:
motherboard aorus z590 ultra
cpu i5 11400f
gpu rtx 2070 super
2x8 ram
ssd

Hello,
i make myself custom pc few months ago, when i build it i got gpu led on, i bought then new cable it worked, but today everything worket fine to moment i tried instaling valorant, but i got secure boot problem, so i get into bios and i turn something called system key [? or something like that] then i got request to exit without apply changes [or something like that], after that my pc turned off and when i tried to start it nothing showed up, so i opened my pc and i see that gpu light is turn on,
i tried: reinstaling gpu, starting with one ram, starting without usb, i tried reset bios [with button and with battery], and gpu led is still there, should i buy new cable? or there is another way?

 

[JohnBonhamsGhost]

i make myself custom pc few months ago, when i build it i got gpu led on, i bought then new cable it worked

you mean that originally the system did not POST and showed an LED warning light related to the GPU?

i bought then new cable it worked, but today everything worket fine

you then purchased a new replacement GPU power cable and it seemed to correct the problem?

 

[AnTuA]

you mean that originally the system did not POST and showed an LED warning light related to the GPU?

you then purchased a new replacement GPU power cable and it seemed to correct the problem?

I corrected it wrong. i bought displayport dvi cabel, before i tested on displayport vga cabel, it didnt show anything, i was thinking that vga cabel is broken but, yesterday i test same vga cabel that didnt work on pc but with laptop it does, i tried test vga cabel yesterday too on pc but nothing happened.

 

[AnTuA]

also i have AD error on motherboard, "Issue Ready to Boot event for OS Boot"

 

[AnTuA]

irepair that, if someone will have same problem, try instaling new bios,

View: https://www.youtube.com/watch?v=CujWytnuWRg

if u tried reseting bios and other methots this should work