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Green light blinking on back of my system unit but there is no power

I shut off the tower and unplugged it before it shut down.
the monitor says override and the tower won't turn on.
a green light in the back of the system unit flashes but no fans run and no power lights come on in front.

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  • fishh Oct 13, 2008

    Same thing

  • Anonymous Mar 13, 2009

    same...

  • talkitivejim Mar 21, 2009

    press power on the front of the unit and nothing happens, no lights no fans no nothing. but when i look at the back of the tower the little green light on the power supply is blinking. 

  • Anonymous Mar 24, 2009

    I've got the same problem...Any suggestions??

    Compaq Presario SR1111NX

  • alysha861 Mar 25, 2009

    green light blinks on the back of the computer but the system will not turn on-

  • ubudoggy Apr 01, 2009

    Lost power to the house. Came home and tried to boot the VAIO by pressing the button on the front/side. Nothing... except a flashing green light on the back of the PC. It blinks fairly rapidly when the PC is plugged in and even continues to blink (more slowly) if the PC is unplugged.

  • Anonymous Apr 01, 2009

    I lost power at my home and now have the same problem with my sony desktop. Has anyone figured out what the problem is? Is the computer worthless now?

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I had this problem and i tried everything to make it work. Now all i do is put a hairdryer at the back whilst the computer is plugged in until the light stops flashing then switch on as normal. I also noticed that when the air is warm i do not have to use the hairdryer hopes this helps.

Posted on Jun 02, 2009

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The hairdryer at the back of the cumputer does work. just put the hairdryer at the green light for about 3 minutes it will stay steady then turn your computer on it will work.

Posted on Oct 12, 2009

  • plopdoll Dec 27, 2010

    The hairdryer does work. We experienced temperatures in the teens last nite (in Central Florida) and the computer is on an outside wall. It wouldn't turn on this morning. I unplugged and re-plugged and nothing happened even though everything else worked that was plugged in to the power strip. I found this info with my laptop. Got out the dryer, aimed it the green light on the back and when it stayed constantly green I turned the dryer off. Pushed the button on the computer and on it came. I couldn't believe it. I thought I needed a new computer and/or power supply. How funny is that........I'll have to remember the hair dryer trick.

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We had a power outage and afterwards our Sony Vaio would not power on and had a blinking green light. We found the suggestion to try the hairdryer and Wow we tried the hairdryer on the blinking green light and it worked......we were ready to trash the tower and get a new computer. Thanks so much for this advice. You saved us a lot of money and headaches!!!!

Posted on Oct 17, 2009

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I don't know why using a hair dryer on the back works, but, it works like a charm. Need to keep it aimed at the blinking green LED for 2-3 minutes. LED stops blinking....computer powered right up. Damnedest thing that I've ever seen!

Posted on Dec 28, 2009

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I opened up my pc to clean it out and I got the blinking green light when I put it back together. I thought the blowdryer idea was a joke...but sure enough it worked. Who the heck thought of that?!?! Thanks for saving my ****!

Posted on Nov 20, 2009

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The hair dryer work because it is a dry solder in the PSU, heat makes it expand and connection is made!

Posted on May 07, 2010

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I had unplugged the Sony for about 24 hours and it was a very cold night. I don't know why heating the back of the unit makes the green light come on but it did!

Posted on Nov 18, 2009

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I read all these posts and thought this was a well played out joke and to prove it, I tried the hair dryer suggestion- sure enough 3 minutes later, the computer came back to life. I guess the heat improves the electrical qualities somewhere in the circuitry just enough to get the system to work. I also think whatever it is that needs help from the dryer, may be on it's way out so I decided to back everyting up on an external drive just to be sure. It is working for now- once I jump start it with the dryer.

Posted on Jan 07, 2010

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I had turned off the power strip to my computer last night...just trying to reduce energy use after reading about home energy waste with little built-in lights. This morning, I had the "flashing green light" problem when I turned things back on... and tried the dryer method. It worked! Does anyone know why this happens?
Thank you so much for this tip.

Posted on Apr 21, 2010

  • xhomex Mar 10, 2011

    AMAZING!!! After about a minute of aiming the blow dryer at the green light on the mother board the light went out. Machine booted up after that. I would suspect I have a solder joint that is failing.

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I thought all of you were nuts, but damn if it didn't work. Hooking up the external hard drive to back up eb\verything right now. Thanks a million!

Posted on Jan 09, 2010

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Does this work if the green light is steady and computer won't turn on? My light isn't flashing

Posted on May 19, 2013

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Wonderful ! As an electronic engineer and IBM/Lenovo specialist, I'm used with laptop repair. I changed all suspicious capacitor in vain, checked all MOSFET component, no help. And fortunately i came cross this post dealing with a VAIO VPC EB1M1E laptop. I took off the optical drive and sent hairdryer hot air on flashing green light part. After a while the green light became steady. Too long heating make it go blinking again. Back with green light steady again, I close the lid, the fan began to run for normal shutdown. I opened it again and boot the laptop: Welcome back to life. Great thanks for the genious who discovered this amazing trick, but no more Vaio, next time.

Posted on Mar 16, 2013

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Thought I had to buy a replacement power supply or a new PC.... Thank you so much guys, after reading the "dryer solution" at past midnight in bed, I got out and went down stair w/ the dryer. Yes, it took ~3 minutes (lo speed hi heat) aiming ~ 2" at the blinking blue light below the AC plug, plugged in, the light stopped blinking, stayed on. I was so excited and turned on the PC. Yes, IT WORKS....
thank you, thank you, and thank you.

Posted on Aug 04, 2012

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OMFG u guys! Reading these posts I thought impossible! Well I didn't have a hair dryer so I tried the next best thing! After trying everything I knew possible only to have the same issue, I read the posts and broke out the heater. It took a little while but I'll be damned if it didn't work! Bravo to the genius who came up with this remedy........using an household item! TYSM

Posted on Mar 09, 2012

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OMG! this actually worked . I am so impressed. Thank you. Thank you! THANK YOU!

Posted on Aug 28, 2011

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Hello,
As mentioned that when you turn on the system the lights on the system turns on and the monitor goes off, unplug the VGA cable from the system tower and turn on the monitor and check if you get signals on the screen if it shows you some color bar or a massage, that means your monitor is good. IF not then there is problem with the monitor . get it repaired or replace it. If that is not the case you would need to unplug all the external devices connected to the tower and try, IF not then you need to open the tower and check for the green light on the motherboard if it comes on or you can try reseting the memory card or if you have an video card, then you will have to remove the card and try the build in one .
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