Peculiar windows 10 behaviour acting like "no drive recognized"

TV2 said:

You are correct. 850 Watt is more than enough. But it would not be the first time a power supply was defective.
Not saying yours is, just pointing out that any power problem, including a bad connector, could also explain the behavior in some cases.

Bad SATA port. Bad SATA cable. Bad Drive. Bad Power. The usual suspects.

I'm curious what would happen if you disconnected the 128GB SSD and connected the ADATA to that SATA cable and power connector - just as a test.

Will attempt to locate another PSU of sufficient wattage (however this one is no less then 6 months old, maybe less), what would you suggest the minimum be? 600W I have one in its box (was planned fo another build but that was scrapped and it returned to its box...)

the motherboard is new (less then 3 months on it) and still exhibits the same symptoms as the previous board (same H81 family of boards) which was at leas a year or so old, maybe more.

TV2 said:

Any interest in testing this?:
"I'm curious what would happen if you disconnected the 128GB SSD and connected the ADATA to that SATA cable and power connector"

I have since tested by swapping drives thinking it was a bad drive, same results when hooked directly to the main board

I have decided to test with an M.2 drive that I have on order so I should hopefully have it by the mid point of this week....

Ok, I finally got time to look into the drive and it was how the drive volume was formatted, I have cleaned the drive with disk part and re formatted the drive and all is working as expected.

issue was solved. :)