Question Enabled csm and secure boot at the same time, now the pc won't post.

[Ace_on_pc]

So, my friend was trying to play valorant and as he is on w11 he needs secureboot on and it wasn't working so I thought he should try enabling csm as I wasn't sure what it was but secure boot was enabled. After doing some research it seems like that was a bad idea as they are parallel settings. I've told him to try cmos battery resetting and booting without his ssd but no luck. We've tried unplugging the hdmi cable, plugging it into onboard graphics (5600g) and nothing works the fans turn but no post not even into the bios.
I'm out of ideas so any help is appreciated.

 

[Lutfij]

Welcome to the forums, newcomer!

Try and disconnect from the wall and display, then remove he CMOS battery, then press and hold down the popwer button on your case, then replace the battery after 30 mins. See if that helps you.

As for your platform, what is the make and model of your motherboard? BIOS version for the motherboard?