Most of the USB powered drives do that when on a laptop or battery power. As to formatting it, are you saying it does not show in Device manager?
Bob
I have a Toshiba 250GB external HDD that used to work, but hasn't since i pulled it out after storing it awhile. My computer and laptop won't recognize it. A blue LED light turns on on the HDD to indicate it is running. I've tried some tips on the net so far no results. If I can't get it fixed, I'd at least like to learn how to format it. Please help!!!!

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