Originally Posted by serbusfish
Right I see, wont be doing it again in future then!
However, would this still be an issue if the PC was put into sleep mode? Or would it need to be shutdown before the cable could be removed?
I'm not sure. Unfortunately, I don't have a spare computer to test it with either. However, if your sleep mode completely turns the computer off and just leaves the memory powered up, then I would guess that it's safe because the video card seems to be completely off. However, I would be scared to take a chance. So instead of Sleep Mode (even if it turns the computer completely off), I recommend Hibernation. Hibernation turns the computer completely off. It's identical to shutting the computer down, only you'll have a Hibernation file in the boot sector.