Thanks for that, checking it out now
you need to fix your mbr your system is saying 'i've got a hard drive here but how do I use it?' thats why it is hanging. You may have to hang this drive off another computer as a second drive if you have access to one or like suggested get a sata to usb connector to repair this....check this site out
to be honest, I've never updated a BIOS in my life! I've never even really heard of it or knew you could!
Besides resetting BIOS, have you tried updating to the latest BIOS (you are 4 revisions behind lol)? Nothing in the official list of fixes but I personally always run the very latest BIOS builds for my systems as there are often unlisted changes. Lord knows it can't hurt your current situation.
I'll definitely give it a go
Although I suspect I have borked the mbr as others have said, its the most likely explanation.
Thanks for this though! Will update once I get my HDD fixed as I have nothing else to boot into at the moment that I can do this from.
I don't feel quite so bad about not knowing since the site does say dont update the BIOS on a system that is working fine