With the build here I simply stuffed the cd writer right above the ide in the bottom 5 1/4" bay and slaved the optical. The dvd burner then sits above that being a sata drive there. The two 500gb sata hard drvies under the ide to take advantage of the pair of 120mm front intake fans seen on the Antec 900 model case.
The constant beep code on the other hand points at a hardware problem as far as the board is concerned. The Specifications for that model indicate the AWARD bios there for lookin up the specific error code. GIGABYTE - Product - Motherboard - Specification - GA-P35-DS3R (rev. 1.0)
Sure it's one continuous beep or a constantly repeating hi-low, hi-low beep code? A continous hi pitched beep code points at a cpu overheating while a repeating hi-low points at cpu failure.
Award BIOS Beep Codes
Award BIOS uses beeps of varying duration. A long beep will typically last for 2 seconds while a short beep will last only 1 second. Award BIOS also uses beeps of different frequency to indicate critical errors. If an Award BIOS detects that the CPU is overheating it may play a high pitched repeating beep while the computer is running.
BEEP CODE MEANING POSSIBLE CAUSE
1 Long, 2 Short Video adapter failure Bad video adapter
Repeating (Endless loop) Memory error Bad memory or bad connection
1 Long, 3 Short Video adapter failure Bad video adapter or memory
High freq. beeps (while running) CPU is overheating CPU fan failure
Repeating High, Low beeps CPU failure Bad processor
BIOS Beep Codes
Before panic about that know that there are quite a few versions of the Award bios to consider. The long continuous single beep can readily point at memory as the likely cause. Bios Beep Codes
The wrong memory for that model board or faulty dimms will cause a number of issues. That along with something misconfigured might see the clicking sound from a drive being constantly accessed like the incorrect jumper setting.