If I remove the battery and connect the laptop to the power jack, it works fine too. Recently it is having problem with the start button. Be carefull not to cut too deep into the grove. Test the laptop with only one memory module installed, try different slots. I was hoping for any ideas… Thanks Chris. Then I took out the battery and placed it back. At the starting time when there is any conflict between these modes laptop could not start.

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If it is a motherboard sony vaio vgn – bx760, shall I begin salvaging the parts or is it repairable? If the laptop is absolutely dead even when you use a know good power adapter, most likely you have a problem with the motherboard.

If the problem is still there, could be bad motherboard. Nothing is un plugged or broken so please help!!!

As for the power jack, the voltage drop from the positive pin the one perpendicular to all the others, i am thinking and all of the negative ones was only between 3 and 4 volts, significantly below 19 vx760 the adapter.

This could be CMOS battery related issue. For some reason, when I connect the DC cable to the actual sony vaio vgn – bx760 there is a drop in the supply voltage.

This one sony vaio vgn – bx760 also listed as 6A at 20V. Sorry valo help here. The problem is its just black screen and 3 short beeps. If you have two memory modules installed, try removing them one by one and test the laptop with each memory module individually. Did the laptop work on the battery power before?

Laptop does not start. Is it bad power jack or motherboard? – Inside my laptop

My issue is now I do not get any power to the laptop at all. Sony vaio vgn – bx760 have an Asus K50AB the fan comes on and a green light far right of the three nothing else. Toshiba Satelite — no power no lights — battery was alraedy shot. Plug in the AC adapter and try turning it on.

It is a Acer Aspire with 7 poles. Test the laptop without them. To the best of my knowledge you test the fuse with the power off and AC adapter unplugged.

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There was no other sounds nx760 from the computer, no LED lights on that show the battery charge, and sony vaio vgn – bx760and basically, everything looked completely dead. I have replaced the motherboard, AC cable, and triued different adapters and it still has the same issue.

Take a look at this guide for HP dv series: If nothing helps, most likely you have the motherboard problem. Possible memory RAM failure. I know the battery is fine. I did as you suggested. Usually the motherboard has a sticker with the part number printed on it.

No blue LED next to where you plug in the ac adapter to the dc in jack. You can fix the problem by resoldering snoy jack back to the motherboard. Now it will not turn on at all.

Now the other day I opened it up removed and replaced everything, it worked for a day, then here it is again, in limbo. The best way to find a new motherboard is searching on the internet by the part number. However, when I tested the sony vaio vgn – bx760 connected to DC jack and it shows Check all connections, make sure CPU, RAM seated correctly, etc… If everything looks normal, try turning on the laptop gvn minimum configuration: Hope this helps others.

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