Help! My WD40EZRX disappears randomly!

Hi,
My wd green internal hard(WD40EZRX ) disppears randomly from my computer win 7 32 bit,
also “Turn off Hard Disk” at power option is set to “Never”.

It happens when i’m watching a movie or downloading sth or playing a game or working with a software and it won’t Back until powering off the computer!

This is my secondary drive, i also took it to the guarantee center , but they told me according to our tests your hard drive is OK! and we can do nothing for you!

This is also noisy when working multi tasking that needs head’s movement.
My mb is p5k Asus and Bios is updated to the last version.

Hello,

Try running a diagnostic using WD DLG.

Data Lifeguard Diagnostic for Windows

Also take a look at this KB about drive noise.

Thanks,
Lifeguard showed no problem.
Yeah noises are too bad and i’m going to the guarantee center tomorrow again.
Actually my hard drive is still there.