Question No display output after making a change in the BIOS settings ?

[devinoff]

Hello.
I wanted to turn on Secure Boot in the BIOS and read that I needed to change Platform Key. It was empty (was all zeros), but then I changed to, as I understood, the BIOS default key (which had some numbers).
After the pc restarted, I get no display. Pc is turning on, all fans are spinning. Monitor is getting power, but no image.
I tried removing CMOS and waiting, tried clearing CMOS with connecting pins on the motherboard, still no change.
Could you please tell, what should I do? Can I try something else without going to repair store?
Thank you.


my full specs:
CPU: Intel i3-12100f
CPU cooler: Stock
Motherboard: GIGABYTE H610M H DDR4
Ram: BALLISTIX DDR4 16GB 2400MHz
SSD/HDD:
1. CL1-3D256-Q11 NVMe SSSTC 256GB (System)
2. Crucial BX500 240GB 3D NAND SATA 2.5-inch SSD
3. Seagate Spinpoint ST750LM022 M8 750GB 5400RPM SATA 3Gb/s
GPU: AMD Sapphire Pulse RX6600 8GB
Network card: Tp-Link Archer T6E
PSU: Xilence 550w Performance a+iii 80+ Bronze
Chassis: AeroCool CS-107
OS: Windows 11 Pro 64-bit
Monitors: Samsung S23C650 and Philips 241E

 

[hedwar2011]

Go back into BIOS and ensure that any options for Legacy devices is disabled or turned off. When you enable Secure Boot, the option for Legacy devices or booting has to be disabled.

 

[devinoff]

Go back into BIOS and ensure that any options for Legacy devices is disabled or turned off. When you enable Secure Boot, the option for Legacy devices or booting has to be disabled.

How do I get to BIOS if my screen is black, so the monitor is not getting image?

 

[hedwar2011]

How do I get to BIOS if my screen is black, so the monitor is not getting image?

Do you have integrated video on your motherboard or just the GPU you installed?