Hi. I'm using an OCZ vertex 4 as a boot drive and a 3 year old WD cav. black 500gb as a storage drive. Just a few hours ago, my computer suddenly restarted itself. While it usually takes less than 20s to boot up, my computer stalled at the windows loading screen for more than 2 minutes. Upon entering the desktop, I realised that the 500gb drive was not detected. I powered off my computer, unplugged the 500gb drive and everything was fine. I cannot use the windows cd to format the drive as it just hangs at the start. I can't enter my OS with the 500gb drive plugged into the motherboard. Please help.