My 500Gb hard drive won't connect anymore.

[EAM1996]

My Hard drive has decided not to connect to any computers since about 9am. it was working like half an hour before then but now it doesn't seem to connect. the blue light comes on so it's being powered but no PC's are registering it and i hear no sounds coming from within. It doesn't show up in the disk manager. Can anyone help with this?

 

[Mattios]

I guess it's external? Can you try a different USB port?

 

[EAM1996]

I guess it's external? Can you try a different USB port?

I have and it's still not registering anywhere. it won't connect to other Pc's either

 

[Mattios]

Then I'd suggesting replacing under warranty if possible.