I have just had to change the hard drive and reload the software on a compaq laptop but after loading most of the software it just stopped reading cd's. It will happily read dvd's but doesn't want to know about cd's. The drive spins up and the head can be heard moving but thats as far as it gets, if you try to look at any files on the cd in "my computer" it thinks long and hard about it but eventually shows the disc as blank. Does this mean I have a failed drive or is there anything that can be done about it? If it has failed it will be the second one in 3 years.