Slow loading
HD. I have had the same problem of slow loading for the last 5 months or so but without totally loosing any win XP components.
I'm beginning to wonder if you simply have a potential Hard Disk or RAM problem with the PC. If you do not already have a copy of memtest86 its worth downloading the iso file and burning it to a CD or Memory USB stick.
My Dell (Vostro) is five years old and still has its original HD - Its an obvious one but have you tried defragging the drive. I'm sure someone can suggest an appropriate disc checking utility for your PC
Best bet to copy all of your vital data to a second hard drive or memory stick. Have you tried Milo's link and how did it go ?
CAT III