M.2 boot issue

[Cryption]

Hi my computer consists of the follow ; 

I9 10900k 

1080ti 

32g ddr4 3200mhz gskill 

2x 1tb m.2 Sabrent 

512gb SanDisk ssd 

2tb SanDisk 7200rpm hdd 

 

My issue is I installed windows on one of my m.2 and was working fine for 3 weeks and no it won't boot into it , in the bios it detects that they're there but nothing under boot devices , also bios is no longer seeing my SanDisk ssd. 

 

I have cleared the cmos and unplugged and repplugged them all but no luck.  Any ideas how to resolve this ? 

 

If you need any more info or pictures just let me know 

[Ma__ga]

Disconnect all and try 1 at a time, also, try crystaldiskinfo and/or SSD-Z to check on the health of the SSD.