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I have a Sony laptop VGN-CR240E/B thats 6 months old. It has an intermittent problem. It works great when it turns on. When it does not turn on, I only see the power button light and the battery light turn on and then it goes off. nothing happens, or I get the power light, battery light, SD light and the memory stick duo light constantly ON with no screen. I have removed the battery, the power supply works. I have eliminated the memory, hard drive. I dont even see the bios screen/ startup screen. I think its a mother board issue any ideas? usually if I leave the computer off for a day or two it work again until I reset or shut down again. As of today I cant get the computer to turn on for the last 4 days.

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  • mem5678 Jul 28, 2009

    I have two 1G RAM modules. I have removed them one at a time and tried each one on a diffrent sim slot with no luck.

  • mem5678 Jul 28, 2009

    Yes I have tried removing the battery and working off of AC power. First thing I did..

    Its been off for a couple of days and it wont come on now.??

  • aa1Consult May 11, 2010

    At 6 months old, I would definitely contact the manufacturer! Without the memory installed it's not going to POST, prolly just sit at a blank screen with a flashing cursor. Don't forget to rate the advice!http://www.aa1consulting.com

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Have you tried to remove the battery and work off 100% AC power? Sometimes a faulty battery can cause a laptop to not boot correctly.

But, yes that does sound like a motherboard issue. The only thing you can really look at if your have already checked memory and hard drive is overheating. It is possible a fan has slowed which caused the board and CPU to over heat. This would explain why it works after letting it sit for awhile. I would try keeping an eye on the temp of the system and check for spikes. There is also a small chance the CPU could be at fault if over heating is ruled out. These types of issues are hard to troubleshoot once you eliminate the easily removable parts and get down to the CPU or motherboard.


Posted on Jul 28, 2009

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