|After some months of uneventful running of my computer (home build) problems occured. My computer would stop, turnoff and try to turn back on but black screen would show "unable to find boot device etc.". Eventually I was able to get into BIOS and found no hard drive listed in BIOS. My hard drive is a SSD. It somehow disappeared according to my BIOS.|
I thought the problem might be the motherboard but when I removed the motherboard and tried to repair this problem I discovered a second problem the only way I could see the motherboard (Asus) on the monitor was if I used one stick of memory and only in the slot fartherest from the CPU. This problem happened on two Asus boards eliminating the board as a source of the problem.
I loaded my OS (windows 7 premium 64bit) on a regular hard drive (no SSD) installed one memory stick and the computer works fine it does not turn off as before.
My best bet is something may have happened to my power source. I live in an area that has many electrical interuptions in service perhaps one had an adverse affect on the power souce (Corsair 750 watts).