While showing a presentation a few days ago my laptop went into hibernating and shut down. AC plugged in. When attempted to power back on nothing happened. LED lights on front panel blink but power LED does not. My laptop is HP Pavillion dv5000.

Probably the power (AC) adapter is dead. I think your power adapter died while the laptop was showing a presentation. Without AC power the laptop was working until the battery charge went down to zero and then it hibernated. Now, the front LED flashes but the laptop will not start because the battery is discharged. The power LED will not light up because the power adapter is dead. That’s my guess.

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I have a Dell Inspiron 9100. Mine kept on shutting down randomly and eventually got worse. I got a laptop technician out and at first he thought it was overheating but it turned out to be the AC plug going into the back. Every time it moved around the laptop turns off. This implied that it was something to do with the motherboard. I only use this as a spare laptop now, but want to have a hand at fixing it myself. What would you suggest? Is there any kind of botch job I could try before buying a whole new motherboard?

It’s possible that the power jack (the socket where you plug the adapter) is loose or damaged. When you move the AC plug inside the power jack it shorts the motherboard and because of that the laptop shuts down.

It’s necessary to disassemble the laptop, remove the motherboard and take a closer look at the power jack. If it’s broken or loose you may fix the problem without replacing the whole motherboard.

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I have a Toshiba Satellite A105-S4284 laptop. It is not showing that it is connected to the power cord. When I jiggle the port it registers. It seems loose. It doesn’t have warranty. I took it in to best buy and they think my motherboard needs replaced. Please help if possible…

First of all, this problem could be related to the power adapter. It’s possible that one of the wires inside the power cord is damaged and they make contact only when you jiggle the power plug. You can test the power adapter with a voltmeter. If the power cuts off when you jiggle the cable, most likely the power adapter is bad and has to be replaced. Also, you can test the laptop with another working power adapter. If you still experience the same problem even with another known good power adapter, most likely the problem is related to the power jack.

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I have a HP Pavilion zd7000, question is, I get no lights on when I plug in the a/c adapter. I tried without battery and still no lights whatsoever. I hope its not the motherboard, I will hate buying it and that not being the problem. How can I know if it’s the motherboard or something else? Thanks for any replies.

What makes you think that you have a problem with the motherboard? First of all, you have to test the AC adapter. Make sure the adapter provides correct voltage, you can test it with a voltmeter. If the AC adapter is rated 19V, you have to get the same 19v on the voltmeter. It’s possible your adapter is dead and the laptop doesn’t get any power.


I have a Toshiba Satellite A70 laptop. Picked it up on eBay without an AC adapter. I tried several adapters rated 19v as required but shy on the required amperage. I was using a 450watt one. I noticed it would charge the battery OK when the laptop was off but once in windows it would not charge the battery. I read some threads above that pointed to anything from a bad motherboard, voltage regulator power supply or battery problem. Long story short, I bought the proper AC adapter for it, 19v 6.3amps and voila, problem fixed. It now charges in Windows. So if anyone has the same problem, that is how you fix it. Spend the money and get the right adapter for your laptop. Hope this helps someone.

This is very important to choose the right AC adapter for your laptop. The output voltage MUST be exactly the same. If your laptop requires 18.5V you must use 18.5V adapter. The amperage should be the same or higher. If the laptop requires 4.74A adapter, you’ll have to find an adapter witch provides 4.74A or MORE.


My Dell Inspiron 1100 notebook stopped charging when I would plug in the charger. Both when it was on and off. I normally could get it to charge by moving the position of the cord as it was plugged into the back of the computer. It got progressively harder to make it charge until just recently it stopped charging at all. The charger itself, not the computer, started beeping when it was plugged into a power source and my computer is dead with no way to get any charge into the battery or run it with the AC power.

Maybe you have a broken or loose power jack, as it explained in this post? I think you’ll have to take it apart and take a closer look at the power jack on the motherboard. Replace or resolder the jack if needed.
By the way, it’s possible that you have a broken wire inside the power cord close to the power plug. Find a known good power adapter and test the laptop. If you still experience the same problem, most likely that’s a problem with the power jack.


I have a Toshiba 320 CDT. The grandson lost the AC Adaptor. When I constructed another AC adaptor and plugged it in I get what appears to be a code? “53″ flashes on the AC LED. Nothing else happens, the battery doesn’t charge, its dead. But when I push in a bit on the on/off switch I will see a few flashes on the Battery LED. Wonder if someone can help me with this problem.

First of all, make sure that you use an AC adapter with correct voltage and amperage. The voltage should be exactly the same as required by the laptop specification; if 15 Volts adapter is required, you should find one that outputs exactly 15 Volts. The amperage should be as required by the specification or more; if 2A adapter is required you can use an adapter that outputs 2A or more. For example, if the laptop requires 15V-2A adapter you can use an adapter that outputs 15V-2A, 15V-3A, 15V-4A, etc… But if the laptop requires 15V-4A, you cannot use 15V-2A adapter. BTW, your Toshiba Satellite 320CDT requires 15V-2A AC adapter.