Light in on/off button on computer blinks on and off in amber color when turned on. Occasionly, Windows comes up but no further than the screen where you select the User, then screen goes blank and a box comes up indicating "no input signal"
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Re: Computer Won't Power Up
If the blinking amber LED is on the computer itself and not the monitor, this is most likely a power supply issue. First thing to try would be replace the power supply. If the blinking led is on the monitor, it probably has bad capacitors and needs to be replaced. (or repaired)
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If the power light is blinking Amber or Yellow, your power supply is no good. You can purchase a new power supply either online at places like http://www.tigerdirect.com or you can take your whole computer into a store like bestbuy and ask them to show you power supplies that will work with your computer.
If you are unsure on how to replace your power supply, I would suggest taking it to someone that will install it properly.
There are also a lot of videos out there like this one:
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.
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
Open your computer case and disconnect/remove any hard drives, cd-rom/dvd drives, take out any extra cards installed (except video card unless you have onboard then take out the video card too) and all but one stick of ram. Turn the computer on
- if it turns on, plug in each item back one at a time turning back on and off each time ( power trip will cause the pc to not turn on)
- if you smell anything weird from the PSU unit DO NOT try anything further, replace the unit.
- if you have overclocked your computer, use the jumper on the board and reset your bios
In the event you need to replace your PSU unit if Antec is an option, go with that. They are very stable.
A Blinking Amber or Yellow power button means that the power supply is receiving power from the source but is unable to properly distribute it to the components. This can be caused by a defective power supply or a defective motherboard. Just to make sure that nothing else is causing the problem, remove any PCI cards like modem, video card, sound card, etc... Remove the memory modules and disconnect cables to CD/DVD drives. Look at the USB ports to see if any are damaged.
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inside the pc there should be a green light. called flea light. if its not on.. then id say motherboard or power supply are bad. take power cord off. and hold power button down for 10 ecs. then reconnect and retry. i think its abad psu.
Try these (un order of degree of difficulty)
1. Try replacing the battery on the system board. it is typically a CR2032 button-style battery. This helps if the computer has been off for a long time.
2. Make sure all dust has been blown or vacuumed out of the computer.
3. Check to see if the USB pins are bent inside the connector on the back and the front of the computer. Straighten if possible.
4. Remove add-in cards, fans, shrouds, and heatsinks, then check the system board for leaky or mushroomed capacitors. If you would like, this may also be a good time to see if the processor is seated correctly or possibly short-circuited (burned black on the bottom, burnt or missing pins, etc). If it is any of these, you may need a new system board (motherboard)
5. It may be that you need a new power supply. Do your best to make sure that it will fit your computer case and have all the power connectors you need; they are not created equal.
If the power box is bad, The computer will not come on. if you only get a green light, you would need to start with replaceing the power box, if you get a new one and the same thing happens, then the mother board is bad too.