My professional opinion (yeah, I get paid for this) is that the machine is not loading/recognizing the keyboard in time for you to press a key. You need to get into startup/BIOS.
Try holding down the key for BIOS the instant you hit the power button, and hold it down. If you don't know which key it is, try F2 - if that isn't it, power down and try F10, then F11, then F12 (powering down in-between). It's probably F2.
Once in BIOS you need to change the boot order of the drives, putting the CD/DVD drive first.
Good luck.
Try holding down the key for BIOS the instant you hit the power button, and hold it down. If you don't know which key it is, try F2 - if that isn't it, power down and try F10, then F11, then F12 (powering down in-between). It's probably F2.
Once in BIOS you need to change the boot order of the drives, putting the CD/DVD drive first.
Good luck.
