Yesterday, immediately following restarting my computer after a largish Microsoft Update, my 250gb OCZ Technology, Apex Series 2.5" Solid State Drive, disappeared from my BIOS and, as it contains the Win 7 Ultimate OS, I am unable to boot my machine. Fortunately all data is stored on other drives. I have begun the rescue by installing a fresh OS onto another conventional hard drive, but it is a long process with all the auxiliary drivers, software etc.; the best result would be to restart my original SSD I have a StarTech SATA external disk drive housing, which recognises other drives, but the SSD doesn't show up on it. Any ideas would be welcome.