Remove Your Background
I know, I know. You love that picture of your dog as your background.
My advice is to remove it and just go with a solid color background.
While this won't speed up your computer a whole lot, every little
bit helps. If you don't want to remove the background, it won't
hurt anything to leave it up there. I'm simply of the opinion that
you don't see your background very often anyhow (if you're working
in Word or on the web or something), so why keep it if it's slowing
To remove it, simply right-click anywhere on your background (but
not on any icon) and choose [properties] from the menu that pops
up. You'll get a screen like this: