The message says that it can not find a Drive with a OS on it, thats all. It doesnt mean that there is no drive.
Check if the Drive is recognized in the Bios and if it is than follow Xthekidx's advice.
If the drive is not recognized it would be helpful to know what drive you have Sata or IDE.
its not the boot order i have this problem with all new motherboards. You have to plug in an ide drive instead of a sata but i just purchased a new motherboard that doesnt have an ide port so i am pretty much out of options