There are couple of different issues here in this thread.
It’s possible that you corrupted your data when the drive was unplugged before completing the safe removal. Safe removal makes sure to clear the cache in the drive, so that data doesn’t get corrupted. Check disk management to see if the drive shows up there. If it does, then you may want to look for some data recovery software that might restore files from a corrupted partition.
If you can view the files on your TV, but not on your PC, then you may be dealing with power issue. Try the drive on other computers to see if it shows up. Make sure your laptop is plugged in, itself. If the drive shows up on some and not others, you will need to get a power booster cable from Tech Support.
