WD Black 2003FZEX random off-line issue

About a month ago, my WD Black starting to behave strangely, after being used sometime it will randomly become offline and not detected by PC, tried restarting and no avail. Must either power off the HDD or turn off entire system and then power on again then only can be detected. Now this issue is happening more frequent, should I start backup my data and call WD for warranty? Will WD let me replace the drive? Because it doesn’t show any signs of problems in any HDD diagnostic tools.

I made a short video recording with this issue.

HD Sentinel shows everything is in good condition.

Hi sanderz,

You should check the SATA connection also try to connect the drive on other computer and if the issue still persist then you should replace the drive.

Please refer to the link given below in order to know how to apply for the RMA.