drive detection

I recently bought a samsung 970 EVO 500gb m.2 ssd and plugged it in my pc. Its not recognized under the storage devices tab on my uefi simple mode page. If i go to Advanced> NVME configuration it shows up as a samsung 970 EVO 500gb, but i cant change anything .Although it shows up in windows...

The PC I use is my first build, worked perfectly for a couple years now, but recently, after a power outage (which i think was caused by a transformer explosion based on the loud bang outside), Half of the time when I turn my PC on it won't recognize my boot drive, and most of the time when it...