torrents not finishing

[dots]

every time i download a game no matter what game or by whom, i keep getting error messages saying file is corrupted, i do a re-check of the torrent and it goes back 2 99.8 or 9%. every time i download it again then re-check it it goes back 2 99.8 or 9% . ive updated utorrent but the problem still persists.anyone having this problem? is there a way to fix it?

[DreadWingKnight]

Have you checked your disk for damage?

Have you done a RAM check?

[dots]

Ive done both and both are fine

[Firon]

memtest86+ needs to be run for at least 12 hours, generally. You may also wanna look for updates to your IDE/SATA/RAID drivers.