As to the HDD, Windows doesn't move like that so remove the HDD and try again.
The other night I built a PC, after wiring everything up right, I hooked it up to my monitor and when I turned it on the computer was in sleep mode and the monitor said "Message: Sleep Mode"
If anyone knows whats wrong please do help.
By the way: I used an old Dell case and Dell monitor, I used the HDD that was already in the Dell Computer. The OS that was on the Dell was Windows 7.