Hi I recently put a cd that has my chemistry textbook (nelson Science chemistry 20) on my mum's laptop. (Windows 7 HP Pavilion) When I put the disk in it told me that I was not compatable. So I took it out. Over the next few days the laptop would say that she had to check the disk. Then when she would try to turn her computer on it would say that the disk needed to be checked and it would give us ten seconds to push ANY button to turn it off the check. We have tried pushing any button and even esc but once it gets to 1 second it just stops. There is ont even a disk the computer. Please help!