my scenario is
i have compatible pc with windows server 2008 R2 Component motherboard Gigabyte Z87x-d3h cpu i7-4770k 2 SSD Drive Kingston HyperX 3K 240GB
the pc work from 3 years ago ok with normal HDD WD 1T for upgrade issue i replace the HDD 1T with 2 SSD drive mentioned above
the pc working ok for 3 months with the new SSD Drive but from 1 month the server unattended restart and i got error that NTLDR is missing i looked on the BIOS setting i found the first boot ssd not detected i shutdown the pc and start again go to BIOS setting the SSD drive found again i restart the computer windows working back with out any problem for 3 day and it's happened again pc restart and not detect the first Bootable SSD i upgrade the Motherboard BIOS and change the SATA port it working back fro 1 week i think the problem fixed but suddenly it's do that again today i shutdown the pc for 10 Minutes and it working back
i don't know what the problem in
i checked the 2 SSD drive with SSDLife pro the state is ok 100% and Both SSD life 9 Years !