No power, power supply & motherboard green light blinking
I moved my computer to a new spot, and when I did I vacuumed off all the dust off the side of it. When I plugged it in it will not power up. The power supply has a green light on it and it blinks, the motherboard has a green light and it blinks as well. It also has a ticking sound, kinda like a watch. I have unplugged the power supply from everything inside and replugged it back in, took the ram out and put it back in, checked the battery and it is good. Any ideas?? It was working fine up until I moved it.
Re: No power, power supply & motherboard green light...
I had the same exact problem for the same exact reason. Plug the power cable into the back. Open up the side of the case and unplug all the wires that the power supply plugs into. The motherboard, harddrive, cd & dvd drives, everything. wait about 10 minutes and plug them back in, plugging the BIG cable that connects to the motherboard back in LAST. This will make the light go from blinking to solid. I think it is a safety? to protect the motherboard from damage.
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Re: No power, power supply & motherboard green light...
Plug your computer back in and turn it on if the power supply fan isn't working correctly, then that would be your ticking sound and also the computer will not turn all the way on if there is something wrong with any of your fans.
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Where did you replace the capacitors? It is likely that part is defect. When the capacitors were on the Motherboard there is a big chance you demolished the motherboard. These boards have multi layers and while soldering you must be sure the solder is through and through. If you tried to repair the power supply there are cheap replacements. try another power supply before you go on.
It sounds like the CPU is over heating. It probably has poor ventilation. Unplug the unit and open the side panel. Carefully vacuum all the dust inside. Be careful not to damage any electronics. You can use a small brush to loosen the dust before vacuuming. Good luck!
Remove the side pane to access your motherboard cables, etc. Locate the
connector on your motherboard that contains the wires going from your
power supply to your motherboard. It will be a large, rectangular
connector with a lot of individual wires It is not a ribbon cable but
should be located next to a ribbon cable connector and next to a green
blinking light on your motherboard (when the power supply is plugged into
the wall). Note: This green blinking light is in addition to the
green blinking light on the back of the PC.
This next step is important: You have to disconnect the connector noted
above from the motherboard WHILE the power suply is plugged into the
wall. Wait a few seconds and plug it back in. The blinking reen light
on the motherboard should now be a solid green light. The PC should now
If the steps above don't work you will need to get a new power supply.
Try replacing the power supply, a blinking green light usually means the power supply is missing an output voltage. If you do that and you still get a blinking green light then the motherboard will need to be replaced.
Try a different known working power supply on that computer, the green light on the power supply should be constant and not blinking. The green light on the motherboard shouldn't be blinking either but if its not getting the right voltage from the motherboard then it will blink as well.
Get a different power supply and see what happens. At that point the power supply green light should be constant, if its not then your motherboard is faulty at that point, if yout the green light is blinking on your motherboard, if both are constant then reseat the memory and CPU and only have the power supply hooked up to the motherboard and not to anything else.
If you still can't get video then at that point you know the motherboard is definitely bad.
Chances are your power supply and computer is fine! From other forums on this problem (which I also had), I've learned the following: 1. If you unplug the computer for a half hour or so (the blinking green light will gradually slow down and quit) and plug it back in, the situation will correct itself and the green light will be steady; however if this does not work, 2. a reset that works for a lot of people with the blinking light problem involves leaving the power supply plugged in and unplugging the power supply connection at the motherboard (it usually also has a blinking green LED) and plugging it back in. To read up on how to do this, Google "blinking green light on computer power supply" and read through some of the forums and you'll come on more specific instructions. Usually, you have to wade through everybody telling you to replace the power supply or your motherboard is fried. It's worth a try for a quick fix, just in case those situations don't apply!
I've had that happen twice to my Vaio desktop and there was a very easy fix. I'm not a techie, but I found a recommended solution online when this first happened six months ago. I couldn't find the solution again, but I fortunately remembered the steps.
Remove the side pane to access your motherboard cables, etc. Locate the connector on your motherboard that contains the wires going from your power supply to your motherboard. It will be a large, rectangular connector with a lot of individual wires It is not a ribbon cable but should be located next to a ribbon cable connector andnext to a geen blnking light on your motherboard (when the power supply is plugged into the wall). Note: This green blinking light is in addition to the green blinking light on the back of the PC.
This next step is important: You have to disconnect the connector noted above from the motherboard WHILE the power suply is plugged into the wall. Wait a few seconds and plug it back in. The blinking reen light on the motherboard should now be a solid green light. The PC should now power up.
My first thought is that you are right. My second thought is that your computer is probably a couple of years old and some power supplies will wear out. Especially if there's a lot of dust bunnies running around. I'd first take a vacuum to it. Put the vacuum right on the fan of the power supply and let it spin it up, then move it to a spot opposite to that. If you can, remove the case side and vacuum inside as well. Get all the nooks and crannies, but be careful you don't knock anything loose. No guarantee it will help, but it just might.
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