my 500 gb toshiba external hard disk not detecting

I have bought my 500 GB hard drive.
It was woking fine for 4 months.
Then once, i connected the hard disk to my computer, it detected but after 10 seconds, it was not detecting.
I tried many times again but it wasn't detecting.
I bought a data cable too for the hard disk but still it wasn't detecting.
Please help.
I would be very thankful.
2 answers Last reply Best Answer
More about 500 toshiba external hard disk detecting
  1. Best answer
    If it's a portable hard drive which relies on sufficient power from the USB port instead of power from mains supply, you may have to buy a mains-powered USB hub and plug your portable drive into that.
  2. While that might work, it's not the problem. The USB port should be putting out enough juice.

    Tell us more about your system.
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