Try running scandisk on each drive letter, checking both checkboxes, and
rebooting. (A disk could have problems.)
If that doesn't fix these issues, reinstall or upgrade to the latest Windows
XP service pack. (Windows itself could be unstable.)
Andy R.
"tin" <(E-Mail Removed)> wrote in message
news

CC5035B-3E0F-49F1-A121-(E-Mail Removed)...
> my pc has become relatively very slow lately, i have run disk cleanup and
> have uninstalled unused programs but somehow i cannot defragment my hard
> disk, have even tried using command prompt... have so much free space on
> my
> hard disk.
>
> and when i attempt to run antivirus scan on a flash disk the computer just
> switches off on its own.
>
> anyone please help