Turned it on as usual this morning all lights came on but nothing on screen and then went off after about 30 secondsI'll say it. We need more information, like what you were doing with it before it wouldn't start and whether or not you have tried USING a system repair disk. What operating system is installed on it (vista)? Can you access BIOS or go into safe mode? Try pressing the function keys at the top of the keyboard when your computer STARTS and just keep pressing them until you GET somewhere or it turns off. Sounds bad imo, nothing on screen is never good. Hopefully someone with more knowledge can help but they will still need more information, and in the mean time you should google this and try to get a system repair disk and see if you can boot from it. It would help if you could get into BIOS for that because otherwise you won't be able to change the startup order.Also make sure there are no SD adapters, external DRIVES, flash drives, memory sticks or CD/DVD's in the optical drives. The computer will sometimes try to boot from such THINGS if they are present.