Having trouble accessing my hard drive. I'm using Mac OS X Yosemite 10.10

This is what comes up when I click on it when it’s plugged in. 

http://gyazo.com/85e45c602cc4d672b4d8fd8a0538dc10

and this is how it is shown.

http://gyazo.com/252d80874c304886fe747f11023e7383

It’s not coming up in disk utilities and on finder is says the size is 615gb which I’m hoping means I still have my files safe? 

http://gyazo.com/ec826956ab3c95babd8c87bc1658ac4f

thanks

Hello,

I recommend you try with a different USB cable and if possible also on a different computer.