Got disk problems - not sure what to do next. Hers the order of events:
Installed windows updates.
Next time computer was booted, it prompted disk errors, backed up as suggested.
Computer going very slowly.
Ran chkdsk /f on disk - said there are NO ERRORS and nothing corrected.
Computer runs fine for a few mins, then slow again, then more messages saying errors on disk, backup data.
Have run spybot and scanned disk with AVG just in case I have some sort of virus but not really getting anywhere.
Computer gets slower and slower until it stops working, then I have to boot into safe mode/network and can do things and all seems ok but when I try and reboot into normal mode, it all starts going slow again.
Does chkdsk know better than windows o/s about disk problems?
Running on a Toshiba laptop using Windows 7.
Your statement that "it prompted for disk errors" is a little ambiguous. Is it the BIOS or Windows that is complaining about errors? Sometimes the drive develops an excessive number of bad sectors, triggering a BIOS SMART failure. However, because these sectors have been reallocated (ie replaced with spares), Windows/Chkdsk is unaware that a problem exists.
Try a comprehensive SMART diagnostic. Look for reallocated, pending, or uncorrectable sectors.
Have run chkdsk /r /x but this has not made any difference to the way the laptop is behaving. I'm also currently trying to reinstall windows from O/S from Toshiba s/w.....(no CD's supplied - its all on the internal disk....darn it!) The laptop is currently still trying to load windows O/S but is seriously taking its time (2 hours so far)
Thank you fzabkar for the info above - looks very interesting, so I will have a read of all that later.
Download and run the manufacturer of your hard drive disk diagnostic software from their web site. It is not unusual for a hard drive to become faulty like this in a laptop due to it being knock while it is on.