I suppose you can chalk this up as a poor decision I made, but anyway...I have a Dell Inspiron E1505 laptop that's been in use since 2006, and it has obvious signs of rough use here and there (a few cracks near the hinge area, and I tried to unscrew the bottom of the computer in order to clean some of the dust that's accumulated over the years, since I could hear the fan working (it still ran OK for an old computer, though). After screwing everything back together, I turned the computer on, but there was no display at all, and the computer was unusually quiet. I then hooked the desktop monitor to my laptop to see if it was at least trying to run, and I did see the Windows XP startup animation bar, but after that it just went black and there was no signal being sent to the monitor. Fortunately, I was able to boot the computer in safe mode and use it this way, but I'm still curious as to what I could have done to lose the picture on my laptop and keep the hard drive from booting normally, and whether trying to get it fixed is worth it. Thanks in advance.