[SOLVED] BIOS after some time stopped recognizing SSD

Jan 6, 2021
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Hi everyone, I'm sorry if there is a similar topic to mine, but some details are different and I couldn't resolve my situation like other people.

So, I bought a brand new PC with these specs 1 month ago:

Gigabyte A320M-H (bios version is F52)
AMD Ryzen 5 1600 Six-Core
DDR4 16GB Crucial 3200MHz
Kingston SSD 500 GB, A200, M.2 2280, NVMe, PCIe 3.0x4
ASUS RX5500 XT, DUAL, 4GB DDR6
Seasonic 550W

Everything worked well, I installed the Windows and I had to create a bitlocker on SSD due to my work security standards and also I have to Windows accounts (personal and work one). Yesterday, during the day I put the PC in Sleep and went out. When I came back, PC was in BIOS so I just clicked "save and exit". Then it returned me to BIOS again and then I saw that in boot priority list there is no SSD and it is not listed in SATA information.

After one hour of trying everthing, I enabled Fast boot and it worked. It returned my PC to the state before sleep (even though I unplugged power several times). So, some applications were on on, like chrome, etc.

When I went to sleep I turned it off and this morning I have the same problem, but I can't find a solution this time. I tried removing the SSD and installing it again, but it doesn't work. I even tried booting with windows installed USB, but when I want to diagnose PC, it says that there is no OS to diagnose.

Every help would be appreciated. I will go to the service, but I am just tired of them because first I bought a different MB and it was faulty (which I lost 2 weeks on trying) and then they gave me this GB MB (which is even better by specs) so I just want to see if there is any easier solution than going there.

Thanks everyone!
 
Solution
Did you check to determine if all other cards, connectors, RAM, and jumpers are fully and firmly in place?

Could be a loose connection: just loose enough to sometimes work and other times not work.