|Glad to hear you are OK right now and thanks for the update.|
Difficult to say why this is happening. I doubt it was the same thing causing it on both computers. There could be some bad connection in the hardware or even a bit of hard disk corruption. If it happens again we can take them one at a time and see if we can make some sense of it.
Normally I would suggest you select a Best Answer, which would mark this thread as Solved. In this case if anyone best helped fix it then it was yourself and you obviously are by no means certain it won't happen again.
Always pop back and let us know the outcome - thanks