I was on my laptop, Inspiron 8100, and everything was fine, no errors or anything. Took a break and when I came back my computer had a black screen. I tried to restart and it goes to the dell load page and windows Vista page but thats it. It goes back and forth between the two pages. A blue screen pops up between them for about half a second. I took a picture of it so I could read it, the error code is 0x000000ed. After this when I restarted my laptop it showed me disk boot failure. Every time I tried to recover the HDD I failed and got the same message.