WD Elements Portable not mounting

I have a 3 month old 1T WD Elements Portable drive. It was working fine up untill 2 days ago. When I plug it in at any of my pc’s it says it is not a valid drive and needs to be formatted. (Which I dont want to do as I have a lot of data on there). 

However if i plug it into my Samsung TV through which I watch the video clips, etc all the data is still on the drive and accessable. So the TV picks up the drive with data and the Computers say it must first be formatted. Please help!!!

Hello,

Unfortunately, you will need to format your drive in order to make it operational again. This usually happens due a corrupt file. You can try using a data recovery software to retrieve the data and then reformat the drive.