Power problem It's shows red light when it connected to power supply. As I Press the power button it shows green light but in a second it shows red light again.

bad motherboard

You replaced power supply and your made sure you plugged everything back into the motherboard snuggly and in it's proper place? If so it might be your motherboard is bad.

Make sure you have the new power supply turned on. Sometimes there's a O/I switch on the back of the power supply. Flip it and try to boot and see what happens. You might have another bad power supply.
If so your motherboard might be burning them out.

Try removing the power cord for 30 seconds and press and hold the power button. After 30 seconds put the power cord back in and press the power button to see what happens.

Do your fans work when you press the power button? Do you hear any fans running?

When you press the power button do you hear the fan running, hear the disk drive running, see any lights, do you hear the cd drive click once and see the light come on briefly on the cd drive door? If you see all the aforementioned then it is surely trying to boot. Computers don't boot mainly because of the following problems. 1) Bad Power Cord or Power Supply. 2) Electro Static Buildup. 3) Bad Motherboard 4) Bad boot or system files.
Remove the Power Cord and the battery if it's a laptop. Press and Hold the Power Button for 30 Seconds. Then replace only the Power Cord and try hitting the Power Button. If it boots you had an Electro Static Buildup. If you have boot or system files that are missing or corrupt normally the system will be telling you that on an error message that appears on the screen. Does your system show you anything on the screen when you press the Power Button? If not you have a Power Supply or Motherboard issue.

Plz change ur dvd player bcz it was 2 old

Maybe there are some problem in your start button (the button wire connect to mainboard is Loosening.

Please press the start button for about 3-4 seconds then see it would start. Always it may solve the problem, this happend to my inspiron 6400 too, after used for years the start button failure. It shows only power lamp lights green but the other light cant light red.

If no, maybe your must change a power supply, as the lower volt current cant start all the device.

same equql problem....?????

Can you help?



i have a denon 1720 dvd player. When you press the power button it comes on for 3 seconds then the power button turns back red and powers off. If you press the eject button within the 3 seconds the tray opens and the power button stays green. As soon as you close the tray the power agin goes to red. i have a denon 1720 dvd player. When you press the power button it comes on for 3 seconds then the power button turns back red and powers off. If you press the eject button within the 3 seconds the tray opens and the power button stays green. As soon as you close the tray the power agin goes to red. Can you help? thanks thanks

System does not power on and the LEDs on the front of the computer are not flashing.
System unable to power on.
Press and hold the power button for less than 4 seconds. If the hard drive LED turns green, then:
1.Check that the voltage selector is set to the appropriate voltage.
2.Remove the expansion cards one at a time until the 3.3 V_aux light on the system board turns on.
3.Replace the system board.
OR
Press and hold the power button for less than 4 seconds. If the hard drive LED does not turn on green then:
1.Check that the unit is plugged into a working AC outlet.
2.Open hood and check that the power button harness is properly connected to the system board.
3.Check that both power supply cables are properly connected to the system board.
4.If the 3.3 V_aux light on the system board is on, then replace the power button harness.
5.If the 3.3 V_aux light on the system board is off, then replace the power supply.
6.Replace the system board.