I have been given a Toshiba laptop which has been left turned on when the battery has gone dead. The hard drive was unreadable, and on attempting to format it, I get the message 'Trying to recover allocation unit' and a number, which increases slowly up to about 15000 and then stops. I have tried running fdisk and partitioning the drive, and have been able to produce a small partition (10Mb) which formats ok. Has anyone any good ideas?