Was working on my PC last night trying out a live Linux distro. Everything was going fine, installed the distro to a USB pen drive and rebooted in order to check the install was working. As the BIOS flashed up I thought the two hard drives I have installed were missing but no, they were detected by the AHCI setup. Chose to boot from the pen drive to no avail. It happens sometimes with Linux installs so thought I'd just try again so rebooted to go back to Windows. Nada. Nothing. When I go into the BIOS the hard drives aren't shown as being detected (perhaps as they're SATA drives and the BIOS lists IDE) so I'm a bit stumped. What's happened, why and more importantly, how can I fix it?
An interesting aside is that I can't even boot from a live CD anymore.