Guys, what about Bootup option form CD drives? If its enabled try disabling it. My Samsung SC152n CD Rom had the same issue with Asus P4BMx but if I remember correctly, disabling the boot up option fixed it.
Btw, if the drives are under warranty, get it replaced.
Stone walls do not a prison make,
Nor iron bars a cage;
Minds innocent and quiet take
That for an hermitage;
If I have freedom in my love,
And in my soul am free,
Angels alone that soar above
Enjoy such liberty. - Richard Lovelace