Non-functional recovery disk

[preposterous]

The hard drive has failed without warning on my daughter's VGN-CR19XN/B laptop.  I have fitted a new hard drive but the "recovery disk" that I made on receipt of the PC does not work.  I got no disks from Sony when  I bought the machine so I have a valid icence for an OS system and presumably a licence for all the other software that was on it but no way of recovering anything.  I understand that this is quite common and that Sony (and other computer manufacturers) operate the same way.  Does anybody have any idea how I can recover my OS (I can probably recover the Sony drivers myself but not without an OS)?

[Blencogo]

You could try copying the Recovery Disc to a new DVD+R on another PC and see if that works.  I think you should have made a set of 2 or 3 Recovery discs to reinstate everything in the event of a HDD failure.

If this does not work, you should contact Vaio Support who will sell you a set of Recovery Discs for that particular Vaio model.