(1) Where do you have SO installed? iSSD or HDD? (2) Do you have iSSD as caching device for your HDD? (which is the factory setup) (1) can you check HDD SMART? #"- IRST shows only HDD present (screenshot attached)" so... could you attach it? #If HDD seems fine... Could be another iSSD broken, check the links in: What to do when iSSD fails?
Got same problem, I used it as Express Cache always. It started to take LOOONG times to boot (4-10 minutes depending if blue screen of the death appeared. Sometimes the BIOS will show it, sometimes will show not all the info and sometimes any at all. I fix mine today, read this: http://cookuop.co.uk/asus-ux32a-not-detecting-ssd/ and this: http://forum.notebookreview.com/threads/...-issd-not-detected.679687/page-10 If you need more images for reference maybe you should look at a video on youtube to see how it is UX32VD inside: https://www.youtube.com/watch?v=cqe1-X_klr4 You got to open it with a Torx T5 and try to heat the iSSD a little if you can (though I think I could have saved that part during my fix). Next try to pry it open with some tool (I carefully used a knife) and screw it back again when finished. This one is the enemy! Very little thing! Suerte Samuel. I'm writing this on that PC right now ;)