My dell dimension 2400 doesn't boot up. I turn the computer on the computer will turn on for like 1 - 2 seconds, clicks, turns off for 1 - 2 seconds, turns back on, then starts the fans and cd drives running but no monitor.

Bad power supply for you Dell Dimension 2400 DESKTOP PC. The power supply has failed components inside. Specifically Electrolytic Capacitors. There are replacement power supply's available that are reliable, and affordable. THIS is NOT a reference to the cheap generic $25 models out there. The Dimension 2400 Desktop PC uses an ATX style of power supply. The style that is used in over 90 percent of desktop computers. It is a 200 or 250 Watt unit. (Probably made by Bestec, Delta, or HiPro) The following link is to Dell Support - Dimension 2400 - Manuals - Service Manual. Tells you the Technical Specifications, How to Remove the Computer Cover, plus Removing and Installing Parts, among other pertinent information. Should you want to test your power supply before proceeding in purchasing one, state so in an additional comment. joecoolvette Bad power supply for you Dell Dimension 2400 DESKTOP PC. The power supply has failed components inside. Specifically Electrolytic Capacitors. There are replacement power supply's available that are reliable, and affordable. THIS is NOT a reference to the cheap generic $25 models out there. The Dimension 2400 Desktop PC uses an ATX style of power supply. The style that is used in over 90 percent of desktop computers. It is a 200 or 250 Watt unit. (Probably made by Bestec, Delta, or HiPro) The following link is to Dell Support - Dimension 2400 - Manuals - Service Manual. Tells you the Technical Specifications, How to Remove the Computer Cover, plus Removing and Installing Parts, among other pertinent information. Should you want to test your power supply before proceeding in purchasing one, state so in an additional comment. joecoolvette

The elusive R. 'Bad power supply for you Dell Dimension 2400 DESKTOP PC.', is supposed to read, 'Bad power supply for youR Dell Dimension 2400 DESKTOP PC. (Desktop PC is in capital letters to inform someone that this is a DESKTOP computer, NOT a Laptop!) The elusive R. 'Bad power supply for you Dell Dimension 2400 DESKTOP PC.', is supposed to read, 'Bad power supply for youR Dell Dimension 2400 DESKTOP PC. (Desktop PC is in capital letters to inform someone that this is a DESKTOP computer, NOT a Laptop!)