Trying to decrypt/uninstrument after formatting disks

Hello all.

I have a laptop with two SSD disks (Former hybrid disks upgraded to two SSD disks instead). Before formatting both disks where encrypted with PGP, i have then reformatted disk 0 (which is the boot disk) and reinstalled windows 7 64bit. Disk 1 has also been formatted.

Now I have installed PGP again, and trying to decrypt the disk. WIthout luck, am getting "Not permitted by your administrator (-12198)" error.

There is no data on the disk - i am only interested in removing PGP from the disk - as this should no longer be encrypted.

I do remember the passphrase.

Looking forward to your response.