I just found something about your "Satafirm S11" thing. This seems to be a common problem with certain Kingston SSDs, in particular the A400 and KC400 models. I found shops that are actively warning to back up all your data and switch to a proper brand-name SSD. They describe pretty much the error that you have, that the BIOS suddenly lists the SSD as "Satafirm S11" and it's inaccessible.
I actually had one Kingston A400 giving me problems as well. For one customer, i equipped six of their identical PCs with cheap SSDs by their request. Five with cheap Verbatim Vi550 S3, one with a Kingston A400 (all 128 GB). The Kingston is consistently slower with everything (Windows Updates for example), and after bigger software updates, it often "freezes", where it can take 10 seconds to open the start menu for example. This only happens on the PC with the Kingston SSD. In those cheap models, they always put together the cheapest components they can acquire, even changing them (without changing the model number). So for the A400, you actually have several different "sub-models" with different cheap components inside.
The Kingston A400 has now developed bad sectors and can't be cloned to a different drive (cloning process aborts, no matter which software is used). Some programs have developed corrupt files. The SSD has basically made this PC unusable and it has been taken out of commission to be set up anew with a different SSD.
In my opinion, those cheap Kingston SSDs are among the worst SSDs you can currently buy. I would never get one again. To me, Samsung or WD/Sandisk only, and only mid-range models or higher.
