Crashes, "blue screens", freezing and so on are all just a harmless part of the process when trying to establish a stable overclock. You aren't doing any damage to the system so long as you aren't crashing because of something like over-volting (the actual opposite of your issue I suspect). It takes everyone a few crashes at minimum to dial in the right settings- for the higher OC's like mine, I think it might have been more like a hundred crashes and a couple hours of failed startups. Just want to make sure you don't get nervous about what happened.
I would say that 1.4v is probably just far too low for your clock speed- that's actually lower than the stock voltage. May I ask if that's what you manually set it to in BIOS, or was that read from something like CPU-Z within windows?