Z270 HD3P Won't boot into BIOS

n1te0wl141

Commendable
Jan 9, 2017
18
0
1,510
Greetings everyone!

As the title implies, my Z270 HD3P doesn't even boot into BIOS. I was having some issues with blue screen so I went into BIOS and turned on the "secure boot" option, as I figured it was a sort of safe mode. Turns out it's a dumb feature Microsoft demands manufacturers put in, and it causes all sorts of issues. Anyways, I turn on my pc, it starts booting, all 4 LEDs light up (for faulty hardware), and it shuts off, then turns on, and gets stuck in that loop. The components (GPU, CPU, RAM etc.) aren't actually faulty as I tried them on other PCs and they worked. I already tried clearing the CMOS, the problem is, it doesn't even get into the BIOS. If there is some way to disable this secure boot thing without entering BIOS, it would probably fix it. I have already picked out a new motherboard, however I want to know if there is any way to fix this before I buy the new one. May as well give it a shot, ya know? I've asked questions on here before, and you wonderful people have always helped me out, thank you in advance for the help!
 
Solution
https://docs.microsoft.com/en-us/windows-hardware/design/device-experiences/oem-secure-boot

Boot sequence

After the PC is turned on, the signature databases are each checked against the platform key.
If the firmware is not trusted, the UEFI firmware must initiate OEM-specific recovery to restore trusted firmware.
If there is a problem with Windows Boot Manager, the firmware will attempt to boot a backup copy of Windows Boot Manager. If this also fails, the firmware must initiate OEM-specific remediation.
After Windows Boot Manager has started running, if there is a problem with the drivers or NTOS kernel, Windows Recovery Environment (Windows RE) is loaded so that these drivers or the kernel image can be...

n1te0wl141

Commendable
Jan 9, 2017
18
0
1,510


Oh yeah, probably should've mentioned the rest of the specs.

CPU: I5 7600K (Kaby Lake)
GPU: MSI R9 390x
RAM: Kingston HyperX Fury 8GB
 

n1te0wl141

Commendable
Jan 9, 2017
18
0
1,510


We did. The PSU works fine, I believe the issue is with the secure boot option. I've tried pretty much everything I can think of, which is not much other than resetting the cmos.

 

n1te0wl141

Commendable
Jan 9, 2017
18
0
1,510


Apparently secure boot checks if every component has that feature, and if not, it just shuts down (from what I've read online)
 

4745454b

Titan
Moderator
https://docs.microsoft.com/en-us/windows-hardware/design/device-experiences/oem-secure-boot

Boot sequence

After the PC is turned on, the signature databases are each checked against the platform key.
If the firmware is not trusted, the UEFI firmware must initiate OEM-specific recovery to restore trusted firmware.
If there is a problem with Windows Boot Manager, the firmware will attempt to boot a backup copy of Windows Boot Manager. If this also fails, the firmware must initiate OEM-specific remediation.
After Windows Boot Manager has started running, if there is a problem with the drivers or NTOS kernel, Windows Recovery Environment (Windows RE) is loaded so that these drivers or the kernel image can be recovered.
Windows loads antimalware software.
Windows loads other kernel drivers and initializes the user mode processes.

The bolded section is why I think it should still boot. If the setting got flipped there should still be a way for you to get into the bios. And from what you said the four lights light up indicating faulty hardware. Sounds to me like something broke or power got unplugged somehow.
 
Solution

n1te0wl141

Commendable
Jan 9, 2017
18
0
1,510


What should I do?
 

R0GG

Distinguished
Try this one : Disconnect your system drive from the motherboard and while you're at it all hard drives and optical drives, and any unnecessary hardware, reseat ram modules if you have couple spare minutes then boot your system up.