Computer is running EXTREMELY slowly

My wife's 2.4 Ghz Celeron XP Home computer is running EXTREMELY slowly..
both on and offline.
I have tried EVERYTHING I can think of and nothing works including :

defragging
-removing all temp files
-cleanup on all disks
-msconfig..to close unneccesary programs from startup
-changing virtual memory
-disabling zone alarm

NOthing can speed it up. The local tech from the store where the computer
was purchased had a quick cursory look in Safe mode and thought it was
probably software related.
The C drive is only 9.7G of which 4G is free...? could that be it?? The
other drive is 27G. Repartition for more room on C??.....
Anyway I am dumbfounded!!
Can anyone help?
Thanks in advance

.

Relevant Pages

  • Re: login problem
    ... Will this work on my home computer? ... > My reply is at the bottom of your sent message: ... > Offline NT Password & Registry Editor: ...
    (microsoft.public.windowsxp.help_and_support)
  • Re: Opening single web page
    ... files (and delete offline content when that dialog pops up) And while you're ... it's often recommended that the TIF folder be kept at about 50 MB ... Open a CMD window and enter ... On my home computer I cannot open the ...
    (microsoft.public.windows.inetexplorer.ie6.browser)
  • Computer is running EXTREMELY slowly
    ... My wife's 2.4 Ghz Celeron XP Home computer is running EXTREMELY slowly.. ... both on and offline. ... -disabling zone alarm ...
    (microsoft.public.windowsxp.general)
  • IP Configuration
    ... I upgraded to Zone Alarm Pro and Windows augtomatically ... Configuration Utility is trying to access the Internet" ... a senior citizen using a home computer for some personal ...
    (microsoft.public.windowsxp.newusers)
  • IP Configuration
    ... >Configuration Utility is trying to access the Internet" ... >every time I boot up. ... Zone Alarm has no information on ... >a senior citizen using a home computer for some personal ...
    (microsoft.public.windowsxp.newusers)