Hi
Thanks for the reply, and apologies for this rather long reply...
I ran a couple of memory tests from the UBCD (Memtest-86 v3.3 and Windows memory Diagnostic extended), no problems found. I then ran chkdsk in NTFS file system tools. It said it was deleting several (17) index entries for index $0 of file 25; finally it told me there was 4KB in bad sectors.
I rebooted the PC with Gparted and there was still a "warning triangle" against the NTFS partition. The information on the partition said:
WARNING: The disk has bad sectors. This means physical damage on the disk surface cuased by deterioration, manufacturing faults or other reason. The reliability of the disk may stay stable or deteriorate fast. We suggest making a full backup urgently by running "ntfsclone --rescue" then run chkdsk /f /r and reboot TWICE. Then you can resize NTFS safely by additionally using the --bad-sectors option of ntfsresize.
Unable to read contents of this filesystem.
I don't know what ntfsclone or ntfsresize are, so I ran chkdsk /f from within Windows. It said all was OK, but when I rebooted with Gparted, I still got the warning on the NTFS partition. I still cannot boot the Windows recovery disk (either one for XP MCE or XP Home Edition).
Any other thoughts???
EDIT - I've looked at the surface of the disks very carefully and they look OK to me.
Thanks
Andrew