WD My Passport - 0748 does not read or open

I got my brother’s WD 0748 2TB a while ago and it worked perfectly. After a few months he started giving an error when connecting to the computer or other devices. When it is listed under “My Computer”, it is not possible to access, format or anything. After a while, he makes a beeping noise and seems to hang up.

I took it to some technicians I know and said they didn’t know what could be done.