When you say bar, you mean the white bar, that zooms across? Did you have the PC set on hibernation or standby? If it is in hibernation, all I do is when I see the bar pop up, I hit F8 and then click delete restoration file blah blah blah. Basically Windows does not like any type of hardware change and will act stupid. I deactivated my onboard sound card and had the same issue......... Your HD is fine, im sure if you put it back in the other PC it will work. I thought my HD was fried to, or to be exact, that the IDE to SATA converter was messed up, but it wasnt. Im not sure if the F8 option works on cold boot, but you can try.