I have a Dell Inspiron 1100. I know its old and crappy. Anyway I was just cleaning it out and now it won't work. It was overheating so I removed the keyboard and cleaned out the fan. I did uses compressed air to do this. I put it all together and let it sit overnight. When I start it now, you hear the fan but nothing else. I put a disk in and it seems to be working but nothing appears on the screen. The screen is totally black like its off. Only the power light goes on and it shuts down as soon as you touch the power button. I used to have to hold it down but now a quick touch shuts it down. Any help you can give me would be greatly appreciated. Thanks