ok here's what I did to finally get it (my laptop) to boot up. I downloaded the microsoft memory diagnostic tool (from microsoft.com) with another computer onto a cd. on my problem laptop I changed the BIOS setting to read the DVD first, then floppy, then hard drive, so I could boot from the cd. (to change the BIOS setting after you turn the computer on keep tapping F8 to get to the BIOS menu, go to boot, then prioritize, depending on your system. thats how I changed it in mine). ok, so once the setting was changed to read the DVD drive first, I shut the computer down, inserted the CD with the tool program in the DVD drive, and restarted it. after it did its thing for a few it went right into running the memory checks. unfortunately, that seems to be the propblem with my computer (all the tests failed) but once all six packets were completed, I exited from the test (it will continue to run until you exit it) and surprizingly it finally brought my to my log in screen. once I logged in I was able to save my data to an external hard drive, just in case it was the last chance I had. I did remove the CD once I logged in (if you leave it in the computer will consistently run the diagnostic on turn on) and after I saved the data I shut down the computer to see if I could log in normally now, and I was able to (i left the BIOS setting to DVD first). I didn't get the error message again that wouldn't allow me to log in but my original problem, the blue screen of death, was still there. thankfully I was able to get the data off my computer and brought the laptop in for service, still under warranty. I hope this helped someone out there. I know how frustrating it is.