Question about Sony VAIO VGC-RB42G PC Desktop

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Computer wont start up. Blinking green light in the back of tower

My computer wont start up and it seems there is a blinking green light in the back whenever i connect it to my power supply.

I read that when Vaio's do this, its usually the power supply or the motherboard.

So which one is it?

and how do i un-hook all the stuff to my mother board to test for power problems.

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  • aacrod Mar 07, 2009

    I have the EXACT same problem. This is the first time I've had this problem. I do know that my power went out and when it returned, I could not turn on my computer. Any suggestions out there?

  • mima2116 May 11, 2010

    frosty 17 thank u so much this really works on my husband computer he was so worry about loosing his pc
    thanks god for people like u

  • Timothy Bright May 11, 2010

    Chances are its a power supply issue. Only way to test this is trying a new power supply. Did you recently just upgrade RAM or the motherboard on your computer? And what year was the computer made in? Older motherboards sometimes cannot handle more RAM then they were designed for.

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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.

It worked twice for me; I hope it works for you.

Posted on May 03, 2009

  • wmcgreg
    wmcgreg Aug 02, 2012

    Frosty17 u r AWESOME!!

  • Joshua Sndheimer
    Joshua Sndheimer Mar 14, 2015

    I understand that this thread is quite old but I wanted to tell you how much I appreciate you posting this on the internet as you saved me from having to buy a brand new motherboard or power supply thank you so very much and you're awesome

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I had the same problem as above and all u do is unplug it as described in the above comment. Make sure power cord is in it and then unplug it . plug back in and bam it works. thx

Posted on Nov 04, 2009

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My computer does the same thing, no power what so ever too it, but a green light on the back of the computer where the power supply is just keeping blinking and making a clicking noise on every blink....

i tryed unhooking the rectangle plug in from the inside and plugging it back in while the computer was plugged into the wall.. but nothing.. when i have the wire from the inside unlpugged the green light is steady.. but when plugged back in it starts blinking again... ahhhh,,,

Posted on Dec 29, 2009

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It's actually a setting in the CMOS. There is an option that says something like "On Power Failure" then there are 3 options to choose from. "Stay Off", "Power On", and I forgot the other one.

What I did was powered it up with a different Power Supply,went into the CMOS and chose "Power On",Turned off computer and plugged the old supply back in and it works.

Hope this prevents this from happening to you guys again.

Daniel Valentine
PC Guru,and owner of PC Paramedics 302

Posted on Dec 25, 2009

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Sony has a excellent support website (link included) If you are getting a green light and you can open your CD-ROM drive or floppy drive lights up when you turn power on then it is probably not your power supply. This don't mean *********** board is bad. Larry

http://esupport.sony.com/US/perl/model-documents.pl?mdl=VGCRB42G&LOC=3

Posted on Mar 06, 2009

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I have an HP and my son accidentally kicked it. Disconnecting the power supply worked for me too!

Posted on May 20, 2012

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