hi have a seagate st3500418as 500 gig hdd. it was working perfectly but during a normal shut down i had a power cut.
after a day or two i went to boot my pc and i got a mbr compressed messege so i stuck in my winows 7 ultimate cd and run repair. this did nothing so i then cleared the cmos and started from scratch with hdd failing to show up, i used ubcd and tryed to wipe the disk using killdisk and after an hour and a half it did not look as though it was doing anything so i cancaled the opperation. the hdd is now locked! i tryed mhdd and the master password (seagate +25 spaces) and this failed, i am now stuck as to what to try, i need some help as this is the only hdd i have and can not afford to buy a new hdd