Not an expert, mate, but it seems a bit of a coincidence. I guess there might be a bad sector on the drive which allows you to read some parts if it, but won't write to other parts, but from the noises you said the CD drive is making, it also sounds like it could be that. Sorry not to be more definite. What make is the hard drive? If you go to the manufacturers website, most of them have downloadable diagnostics you can run on the drive. That might help, at least for elimination purposes.