Hello, I have loaded and fully updated Windows 7 Pro on my Acer 9300 laptop HDD. Because of problems with the laptops BIOS, I did this on my pc. No problems there. In fact the HDD runs smoothly and quietly on the pc but when I reinstalled it on the laptop, I was getting the above error code. Since then, I have tried using the Installation disk to repair the problem but it was unable to do this. I have made and run a repair disk with the same result. It seems that the boot file goes missing somewhere along the line and I cant find it. I keep getting the message, this file does not refer to this hardware. At the moment I am using the laptop HDD on my pc to write this so the disk itself is ok. Any help would be enormously appreciated. Cheers, Ron