I run Windows XP Professional. My disk thrashes so much that I can hardly use my computer.?

1) As someone said, defrag your hard drive

2) What is running when this happens ?

(Hint: There's ALWAYS something running under WinXP)

3) How much memory do you have?

I run Windows XP Professional. My disk thrashes so much that I can hardly use my computer.?web browser

Have you tried to defragment your disk?

I run Windows XP Professional. My disk thrashes so much that I can hardly use my computer.?windows installer internet explorer

Does it actually make a noise? Like a clicking sound?

If so this is a sign that your hard drive is dying (it could be soon it could be a year). You should backup your data to a cd or USB storage device, and then replace your hard drive.