Ok, here's the history of the problem. I have 80GB Hard drive "Samsung sp0411c" and I am using it since two years with my old desktop system with this S.M.A.R.T error at the startup (BIOS). TWO YEARS BACK I think there are some bad sectors involved at the last part of the HDD space. There were 4 partitions initially I.e. (C, D, E, & F). The problem started with partition F with following issues; ? Always took so long copying files into F ? System got stuck up when some file(s), folder(s) from F drive were opened and then automatic restart ? That time ran CHKDSK on F drive but in the middle of scanning it always restarted the PC automatically. ? Sometimes system restarted when I was copying some random data in the F partition. ? Whenever this restart thing happened, at the start up it displayed that there is no primary hard drive detected. Then eventually it came back live after 2-3 attempts (always). ? I also deleted the Partition F: and then recreated the partition but same problems persisted. 1 YEAR BACK ** Due to above issues I left the partition F as it was and used others like C,D & E but an year before the partition E started to do things same way F was doing and at that point F was not accessible with error popping (The disk is not formatted. Do you want to format it now?) ** I formatted the partition F and ran following HDD tools afterwards (Partition Table Doctor) (HDD Regenerator). Surface tests for C,D,E was fine but when it started scanning the HDD somewhere in F partition area, these tools messed up with something (took so long) (stuck at sectors for long time without repairing it). 6 MONTHS BACK I came to know that there are some serious issues in the HDD sectors inside the last 1GB part of the hard disk. I made 5 partitions C,D,E,F,G . The G partition was for 1GB space and I never opened this drive since I created it because this will cause same problem what the F was doing before. NOW!!! I don't have much issues with C,D,E & F while operating them. Don't use F too much to be at safe side. But I feel that HDD is very slow overall and and every time I turn this system on I get "720-SMART Hard Drive detects imminent failure Attribute failed: #83". Wondering if it could be fixed or not and I know and understand that my hard disk was failing ever since and most of you guys will advice to back up and purchase a new one, but I am still on to fix this one and, as if there's any way to get it right up? Many Thanks!