And todays problem is.... I have have a semi-new 20GB hard drive that used to be in my PC, but i took it out ages ago. It was only used for storage. Several times this week i have tried to put it back in, but if i do when i boot up and the system re-configures all the drives to except it, it does the opposite. It not only ignores it but also ignores my Main C drive and tells me i only have 2 drive a CD and a DVD, so no hard drives at all & no operating system lol. If i unplug it and reboot, there is my old C drive and all is ok. So what is the matter with this drive ? Why is it doing this ? The Jumpers are set Master(C) and Slave(new disk) as they were when it used to be in my system. Its a puzzle....