I have a Dell Dimension E520 that has had the Motherboard, Hard Drive, and memory replace before my warranty went out and then I got a blue screen that sais stop error 0X0000007B i called an a technical person helpes me get back on my computer. It happened a little over a month later and then they said I had to pay for help. I got a lady that says my hard drive needs replaced. If I log off and shut my computer down like I am suspose to then turn it back on it says floppy diskette seek failure or i get the blue screen with the stop;Error message 0x0000007B. I have another problem if i log off my computer and shut it down and unplug it, when i plug it back up it come on with out me ever touching the button. Can some one please help me. I tried to get Dell to replace the whole computer when I had the warranty but now i'm stuck. I played with it and finally got back on to where i can try to find some help.