I have two hard drives in my PC. Slave hard drive is not spinning at all. Now my all data is on that drive. Is it possible to repair this drive?

   If that is the C drive, that could cause the boot problem that you mentioned in your other post.
   I would start by opening up the computer case, finding the drive, and making sure that the cables are all properly plugged into the drive.  It should have a wide thin cable attached to it which transfers the data and four wires in one connector which powers it.  It sounds like the power may not be hooked up to it (at least that is what we are hoping it is).
   If that does not solve the problem, you probably have a bad drive.  I don't think that it will be able to be fixed because just about any repair to a drive requires that the drive be opened up and once it is opened up, it is only good for an hour or so of usage.
   A computer repair shop may be able to get the data from it, but it will be expensive and there is no guarentee that it will work.  Local repair shops will tell you that they can do it and they may be cheaper but it is probably something they very seldom do and they may not be successful.  I would go with a reputable national company.
   The price for doing this will include the purchase of a new drive to put the information on.
   Having said all of that, I would suggest that you go to a repair shop and ask them.  They would know better than I.