Power light comes on and goes back off

Either a loose/bad power cable or the backlight is failing.

Check for a loose power cord on the back of the monitor (quite common).

you possibly have a small short or even the driving lights sorry folder lights are drawing too much power from the system.For the power to come and go you either have a circuit breaker that is overheating putting the lights out and then cooling down and bringing them back on again or one short in the fog lights themselves.Regards

power light comes on and then goes off

you need to replace the power supply. The fan sound is the fan for the power supply and not the computer. for cheap parts or used goto headgap's. They know what you need and probably even help you replace it yourself.

You may need to replace the cmos battery, its a cr2032 3v button cell
Make sure all your expansion cards and memory are reseated.
Make sure all cables are reseated.
your power supply could be bad

If that doesn't work try this


Here is my fix for the dell dimension 4400 amber light problem. It works!
replace cmos battery.
then unplug power cord form wall about 5-10 secs.
then plug it back in, wait 5 secs.
If amber light comes on, press and hold power button until it goes out.

(with light out, press and hold power button while amber light comes on and goes off again holding power button 2-3 secs after light goes out.) repeat whats in parenthesis until computer turns on
it should only take about 6, 7 tries.

After the computer boots, you may want to setup cmos or boot into windows.
After you shutdown, unplug power cord for 5-10 secs then plug it back in.
Press and hold the power button, computer should come on.
I found that's the only way to turn on the computer.
If you shutdown and don't unplug power cord the computer may not boot, mine didn't.
Strange I'd say

A+ Technician

blue come on tv do not red llight come back on

hy i got a toshiba 42" LCD tv ,when i press the power boton
iget the red light,& it stay that way ontil i pressthe power back off
thanks for any help

I need the model number of your set. And can you count exactly how many blinks the power light blinks when you press power? Please respond to this same post so all comunication will be available for each response.