I recently thought I would challenge myself and build my own PC rather than buy an ready assembled machine. I bought all the parts, put them together fairly easily, but have run into a problem, which I hope someone on this forum can help me with. My hard drive is connected as the Primary IDE device and is set to master. My CD Drive is connected as the Secondary IDE device and is also set to master. Problem is: When I boot my machine, the Hard Drive (Primary) is not recognised. The CD Drive (Secondary) is recognised. I have to go into the BIOS setup everytime I start the computer, wait about 30 secs for it to realise their is a hard drive attached and manually set the Primary IDE option to look at this device. However, if I change the configuration and put both IDE devices on the same cable - Hard Disk as Master and CD Drive as Slave, the machine boots up beautifully!! I really can't work this one out, it has me stumped now for at least a week. I have plugged/unplugged cables about 100 times, so I pretty confident its not a cable problem. I'm pretty desperate to work this out, so any help is greatly appreciated.