Question Black Screen

[TiberSear]

A couple of days ago I put in my motherboard a second SSD (an M.2) which I tried before and worked in my pc, but when I started my pc back, all I got was a black screen, couldn't enter BIOS, or do anything, there was no beeping and no warnings, so I removed it and tried to boot again just to get the same response, ever since I tried checking everything including cables, the monitor, the ram sticks (got two and I tested each by trying them in each slot 1 by 1) the gpu, took it out completely and plugged in the HDMI cable in the mobo directly, tried resetting the CMOS, checked for burn marks and burnt smell, nothing, even took it to a repair shop for a quick check, they haven't found anything either; I'm wondering if anyone has heard of such a case before or if anyone has any ideas what might've went wrong.
My specs are:
Cpu i5 Six core 3.7ghz
Motherboard Asus Z370-P II
Ram 2x16gb Corsair Vengeance DDR4 2400 Mhz
1st SSD 500gb Samsung 970 Evo Plus M.2 PCIe NVMe
PSU 550W Vs Series

 

[jay32267]

Was the second drive you put in bootable?
I would reset the BIOS and try booting with only one bootable drive installed.

 

[TiberSear]

It was bootable, I used it as main SSD in a laptop,
I tried resetting the BIOS, and I tried and am trying without the one I added, and still nothing.

 

[Moonub]

Posting my solution on a few of these threads

on Aorus Master x570, I solved this by filing back to an earlier version of the BIOS (f32). The problem seems to exist with the latest version.

I didn’t try the CMOS reset approach..

 

[TiberSear]

Would definitely try it, problem is I can't access bios )

 

[Moonub]

Would definitely try it, problem is I can't access bios )

you may be able to change the BIOS from Windows. On Gigabyte boards there is the @bios app for this.