I was working on my Dell inspirion laptop when suddenly th eimage on the scree fractured (it really looked like it just cracked apart) and the screen went black. When I rebooted it, it got stuck in a loop that would not go to the home scree and the background looked like a shot from the Matrix. I tried to start in safe mode with no success. I finally shut it down completely and I too had the three orange and one white blinking lights, It has bee plugged in for 24 hours an continues to blink. I have had the video card and the battery replaced within the past 6 months and both times they were from Dell under the warranty.
I hope someone from Dell is reading these because this laptop is from my work and I specifically requested this laptop and configuration because of the software I run. I would strongly discourage anyone who needs a reliable laptop from getting this.