These steps were taken from the last link:
1. Run CMD as an Administrator (click on start, type cmd, right click on cmd from the list, click on Run as administrator)
2. type chkdsk G: /f /r ( 'G' signifies the affected Drive).
3. Run DiskPart utility from the same command prompt type DiskPart
4. Once utility is loaded run "rescan" command. This command locates new disks that might have been added to the computer.
5. Hopefully problem would be resolved and you would be able to explore your disk.