Security features activated but system fails to start.
Security features activated but system fails to start.
Good Morning all, A bit of backstory, I installed Valorant on my PC for my younger brother to play. The game wouldn't boot citing it requires 'Secure boot' to be enabled. I accessed my BIOS and enabled secure boot, restarted my PC and attempted to launch Valorant, the same message popped up. I re-accessed my BIOS and saw that secure boot was enabled but 'not active' (I cannot remember the exact phrasing). I remember seeing that I needed to generate a key of some sort. My first mistake, I rushed through playing with BIOS settings without understanding what they do. After ensuring that secure boot was enabled and a key generated, I saved my settings and restarted my PC. The PC switched on but didn't post, just a black screen. I waited 5 - 10 minutes and nothing was happening - here comes my second mistake. I got impatient and forcefully switched off my computer. Now the PC switches on but I get a 'No signal' message on my monitor and it never POSTs. Solutions Attempted - After reading the stickied thread "How to respond to a no POST or no power up situation" Cleared CMOS by taking CMOS battery out of motherboard and waiting 20 minutes. Reseated RAM (Didn't reseat CPU as it is connected to a liquid cooler and the PC was working fine up until I was an idiot in the BIOS). Boot with no drives connected to the motherboard. Boot with no peripherals connected to the motherboard Boot with only the CPU and one stick of RAM connected to the motherboard. Any advice would be greatly appreciated, thank you! System Config Windows 11 Ryzen 7 5800X RTX 3070 32GB Corsair 3200 DDR4 1TB Corsair NVME SSD (Boot drive) 500GB Crucial BX500
the goal is to activate secure boot, then restore factory credentials, and finally set up your operating system. In my understanding, turning on secure boot after installing an OS when it was previously disabled doesn't provide complete security, though I might be mistaken. Have you considered removing your GPU and using the mainboard graphics instead? The BIOS doesn't appear to have been reset properly after a forced shutdown—try restarting it a few times and holding the power button while attempting to boot. Typically, after several unsuccessful attempts, the BIOS should revert to its default settings.
Thank you for your reply. Unfortunately, my 5800X lacks built-in graphics support. I've tried connecting an HDMI and DP cable to the motherboard, but it didn't work. I also attempted multiple restarts while holding the power button, but nothing changed. Your advice is appreciated!
Secure boot can sometimes render your motherboard unusable, even if it doesn’t respond to power. I tried bypassing the BIOS manually but failed. Pressing power usually doesn’t trigger fans or peripherals—only test by removing all parts except the CPU and see if it boots. A RAM error might help; try reinserting RAM and GPU. Flashing the BIOS is another option if your board has a USB flash port. It’s frustrating when things don’t work again.
When it starts up, I've noticed individuals bypass security by switching to another GPU to disable Secure Boot, then reinstall the previous one and attempt again. It appears that in certain situations, enabling Secure Boot prevents the current GPU from working due to an unclear reason.