My hard drive was showing up as having a lot of Seek errors so I decided to do the SMART thing (sorry!) and replace it before it failed completely. I took a full backup and created a system image that I then restored to a new disk using a rescue DVD. On restart the system wouldn't boot, reporting 'No bootable partition in table'. This had me puzzled and so I tried the Startup Recovery option but this didn't do any better. I even tried wiping the new drive and doing the restore again. Then I found out about the bootrec command (support.microsoft.com/kb/927392). Taking the ScanOs option I found that Windows was now installed on drive F: not the expected drive C:. Then the penny dropped! I'd forgotten to remove the ReadyBoost USB stick plugged in at the back of the PC! When I put in the new hard drive it wasn't formatted so the only formatted drive was the USB stick and this became drive C:. The restored boot table said boot from C: but this didn't have Windows on it - hence the error message. I removed the stick, did the restore for a third time and Bingo! - everything back to normal again. The moral of this story? Do what it tells you in the instructions and remove all USB devices before starting the image restore!