Western digital 1TB HD not being picked up as connected

[Chief2012]

I currently use an OCZ Vertex 2 3.5" 240GB E Series SSD as my boot drive and use a Western digital caviar green as a storage drive. The problem I have been experiencing is simple. Whenever the PC restarts or is turned on for the first time during the day, it quite often will not recognize the WD storage drive at all. I need to re-boot the PC in order for the drive to be hopefully picked up and displayed. Sometimes it takes several attempts at re-booting before the drive finally appears. My wife runs a photographic business and needs the hard drive to store her photos so hopefully somebody can suggest something to try so that I don't have to take it to somebody to get fixed and spend money I don't have. My PC specs are below also for reference.
Zalman CNPS10X Extreme
Corsair Obsidian 800D Case
OCZ Z Series 1000W Gold Modular
EVGA X58 FTW3 Motherboard 132-GT-E768-KR
Intel Core i7 950
OCZ Vertex 2 3.5" 240GB E Series SSD
Mushkin 998958 Radioactive PC3-12800 (3x2GB) DDR3
Gainward GeForce GTX 580 1536MB

 

[Chief2012]

Any thoughts from anybody at all?

 

[Phone Man]

The first thing to do is when you get it to boot then do a backup of that drive in case it is failing. WD has a diagnostic tool on their web site you can download. It could be as simple as a loose or bad Sata cable or power cable. Also a bad Sata port on the MB. If you have a spare cables I would change them out and maybe try a different Sata port. Its a process of elimination. Be sure your cable are seated good and not loose.

Jim