Well, I'm not convinced this post should have been moved to Windows just because it's an ntfs disk, but never mind.
I assume the disk you are trying to read is /dev/sdd - the one you plugged in partway through (earlier lshw didn't list it).
Replace sda3 in the instructions that oldfred gave you with sdd5 (guessing based on the first error popup you posted):
Code:
sudo mkdir /media/windows
sudo mount -t ntfs-3g -o ro /dev/sdd5 /media/windows
However, the IO errors worry me. I think the disk may have developed a fault and be basically unusable. That's probably why windows stopped booting from it.
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