i have a western digital 60gb hard drive. when i switched on this morning i had a message 'disk boot failure - please insert system disk' during bootup. I have no floppy in the drive. I have checked the bios settings and it is not detecting the hard drive. i have tried a new bios battery with the same results. i have disconnected and reconnected power and data cables and tried a second ide cable. I downloded western digital Data Lifeguard Tools 11 Diagnostic tools but this was unable to detect my hard drive either. Hard drive is clicking every 30 secs or so with or without data cable attached. Have tried another hard drive and this works fine. Sounds like hard drive is broken????