Had to install a new hard drive. IBM computer, ASUS P4V8X-MX mother board, XP Pro, SP3. Install went great, no problems what-so-ever. Ran windows update, downloaded what it showed. Now, when I first turn on the computer, just before the windows logo screen on normal boot, I get the message Reboot and select proper boot device or insert bootable media". Control-alt-delete, it reboots and boots perfect. Any ideas?