Verified answer

TestDisk: http://www.cgsecurity.org/wiki/TestDisk

"TestDisk is... primarily designed to help recover lost partitions... Partition table recovery using TestDisk is really easy."

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Recuva is great, but it can only restore files, not whole partitions.

Hp's dont artwork comparable way as others. they have applied a scheme to abide with the help of microsoft policies. One computer, one operation equipment one set up, thats it. you're predicted to apply the Hidden partition as quickly as to create your restoration media. Thereafter the hidden partition is merely used besides the restoration media and to permit BACKUP and fix of backups of person folders. so as quickly as the partition is long gone, so is your media, and so is your restoration strategies and so is any backups you made with the hp Backup and restoration supervisor. there are techniques around this even with the incontrovertible fact that HP wont inform you approximately them. in case you have a domicile windows cd. you could set up domicile windows, leaving spare disk area for an further partition you could then set up the B&RM application, with a flag set to actual to tell it to create a Hidden partition. it quite is going to then try this and on the comparable time convey mutually and assemble mutually the microsoft cabinet archives that make an installation set. It won't be able to create the applications and drivers set because of the fact which you wont have arranged those precise. so which you spot in case you unsderstand this, you're how am i able to place this, ineffective interior the water? so attempt no longer basic, attempt very no longer basic to get the partition back, till you recognize its quite long gone. in case you will hit upon a chum with a replica of the comparable computer, you ought to use their media. in destiny get a no longer basic disk supervisor, and replica partition to DVD.

Try Recuva. It's Grrrrrreat!