I've had three notebooks with similar problems in the last couple weeks.
In only one of the three cases were any errors detected on the HDD by various
disc scanning utilities.
However in one of the other HDD's when using it as a data drive (After a fresh install of Windows
was installed on a NEW drive and all data coed and transfered) and using it to transfer data files
(mp3's with crc data) writing to the drive went fine, but reading from the suspected drive produced
multiple CRC errors when copying mp3 files to another drive.
This is a repeatable error...
the same files from the same group of files results in the same errors, no matter ow many times you want to try it. removing just ONE file from the list of files copied from the parent source still prodces errors, but different files have the errors...
copying either group of files to an identical drive results in no errors...
This proved that there was an error that the disc utilities didn't detect
and that the error was on the specific drive
BTW, the other drive that had "no errors"? it simply quit with no additional warning
I've found that doing things like this reveals and PROVES the exsistance of errors that otherwise go undetected
an undetected error leads to a false sense of security