ASUS Z270-A , M2 SSD Intermittently showing up in BIOS

eeje

Distinguished
May 30, 2010
5
0
18,510
Hello I need some help to resolve this issue I am encountered and I can't figure out what's the cause of it for 3 weeks already.
The problem:

BIOS doesn't always recognize the M2 drive and consequently it doesn't load the OS

Observations
This issue doesn't happen all the time. If computer goes to sleep mode or when I just start it the BIOS will not show it. I also found that if I plug the screens into Mother board DVI and Display ports this issue doesn't happen at all. But if I switch the cords to the dedicated video card on the next boot or after computer awakens from sleep it will not show up in BIOS or show blue screen for the latter.

What I attempted
1. Replaced the M2 drive with a new one - issue unresolved
2. Replaced video card (from Asus 1060 to my old Sapphire ATI Radeon HD 6870) - I tested for 1 day and it everything worked.
3. Replaced video card (from Asus 1060 to Gygabyte 1060) - issue unresolved, same problem
4. I contacted ASUS but they haven't provided me any solution so for that would work.

So after all the testing I think there are several options to find the cause of this strange behavior:
1. Motherboard - Maybe there is a conflict between the dedicated video card and pre-installed video card on the motherboard. Is there a way to turn off the Asus video card from BIOS?

2. Motherboard - BIOS Configuration not set up properly. I am not an expert can someone help with this?

3. Maybe the proximity of M2_2 slot to the video card somehow impacts the loading, should I attempt switching the M2 to M2_1 slot?

Any other suggestions?

Thank you.

Here are the parts that are currently installed:
ASUS Z270-A (Bios the latest version)
i5-7600
Corsair 16GB 2666 Mhz
Intel 600p 512 GB M2 on M2_2 slot
ASUS Dual Geforce 1060 -> switched to Gigabyte 1060
2 Dell 23" screens connected via DVI and Display ports
Crucial SSD 150GB connected through SATA port
Asus DVD
Win10