Seagate Expansion 3TB data recovery / not showing up anymore.

[codehpro]

I took my 3Tb out of it's external case and put it into my computer and it didn't show up so I put it back and it looked like my data was gone!

I tried a couple programs to get it back because they said the drive was empty or something.

I gave up and now I'm trying to get everything back again but the drive won't show up in windows 8 but my other one days and I'm using the same cords and everything.

It also boots up.

 

[codehpro]

It looks like taking it out of the case makes it show up in diskaprt.exe now and I'm trying to recover the files with segate recovery