When the AC adapter is plugged and I press the power button it came on for a few seconds and shut off. I tried something different, I took the battery out and plugged the AC Adapter but this time it didn’t even come on. Do you think its the AC adapter or something is wrong with the laptop.

I think your AC adapter is bad.

The laptop turns on for a few seconds with the battery connected because the battery still has some charge left but not enough to start the laptop.

The laptop will not turn on at all when the battery is removed because your AC adapter is bad.

You can test your AC adapter with a voltmeter. If there is no power coming out, replace the AC adapter.

My HP 520 laptop battery discharges even though it is connected to the DC power and another thing the battery starts charging if i shut down the laptop. Please give me the solution.

I think this problem is related to the DC jack failure. In HP 520 laptop the DC jack soldered directly to the motherboard. Overtime, if you plug/unplug AC adapter a lot, connection between the DC jack and motherboard breaks and it stops charging the battery.

Most likely you can fix the problem if you resolder the the DC jack.

In order to repair the jack, it’s necessary to disassemble the laptop and remove the motherboard. This service manual will help you to remove the motherboard.

I have an Acer aspire 9500 laptop and my power button doesn’t work. At first I had to press it 2-3 times at different angles and it worked. Yesterday I tried about 500 times and I didn’t manage to power up my laptop. I took the plastic covering off and pressed the tiny button on the green plate but still nothing! Can anybody help me?

In an Acer Aspire 9500 the power button is located on the power button board.

If the power button stopped working, you’ll have to replace the entire power button board. I believe the part number for this board is 435906BOL11. Google the part number and you’ll find it.

Remove the plastic cover, disconnect the power button board from the motherboard and replace it with a new one.

I have my Nec Versa laptop which works perfect when turned on. However when I switch on the power, the front blue power light turns on but without anything on the screen. I have to force the blue light off by pressing down the power switch. I try the turn on/off process for quite a while until the screen finally starts. This process irritates me because sometimes i have to make so many trials or even give up. Any ideas about the causes and solutions?

First of all, I would check the memory modules. It’s possible that one of the memory modules is not making good contact with the slot or failing.

Try reconnecting both memory modules and test the laptop.

Try removing memory modules one by one and test the laptop with only one module installed. When the faulty module is removed, the laptop should start properly.

Try installing different memory module into different slots on the motherboard. It’s possible not the memory module but the slot itself going bad.

I have a HP Pavilion dv6000. I push power and it flashes for a second then nothing. The power supply is fine, as is the battery. The place I bought it says I should just buy a new one for the price of repairs. How do I know if it’s Mother Board, or could bad memory cause this symptom?

First of all, make sure the power supply works properly. You can test it with a voltmeter.

If the power supply is fine, your problem could be related to the memory or motherboard failure.

Most likely your HP Pavilion dv6000 laptop has two memory (RAM) modules installed. Both memory modules can be accessed from the laptop bottom.
Try removing memory modules one by one. Test your laptop with each memory module in either memory slot.

If you have the same problem when only one memory module installed, most likely this is the motherboard failure. It’s very unlikely that both memory modules failed at the same time.

By the way, some HP Pavilion dv6000 have a known problem with the motherboard and HP fixes this issue at no charge if your laptop qualifies.

On my Dell Vostro 1500, the plug in part for my charger adapter, inside my laptop broke off and is floating inside my laptop. Is this part replaceable?

In Dell Vostro 1500 the power plug (also known as power jack) is soldered to the motherboard.

Yes, the power plug is replaceable but it’s necessary to disassemble the laptop and take a closer look at the motherboard to make sure it’s not damaged by the broken power plug. This service manual explains how to remove the motherboard.

If the motherboard is not damaged, most likely you can solder a new power jack.

This fix was submitted by Donald Ksing in this comment and here it is:

I had a problem with my laptop’s internal speakers, and going through a couple of sites, I managed to figure out the problem.
I have an HP Pavillion DV 6114TX. I hope this helps someone.

Step 1: Figure out how to open up your laptop:
http://www.insidemylaptop.com/take-apart-hp-pavilion-dv6000-laptop/

Step 2: This helped me figure out my problem. You may find your issues defined in one of the many links from here:

Step 3: Troubleshoot the problem:

In my case, the cable feeding my sound had gone bad (Kolt 1). So I switched it with the one feeding my touch buttons (Kolt 2). I’d rather have sound than the ability to control no sound.

My 5 years old Sony Vaio laptop worked fine last night, and I shut it down (vs. hibernating) when I was done. Today, it will not power up at all – no response when I hit the power button, no lights when connected to power. I’ve tried pressing power button for extended time, remove/reinsert battery, switching batteries, switching power cords – no result.

Suspect problem with the motherboard, or with the connection between the dc jack and the motherboard. Any advice on diagnostic &/or repair would be appreciated.

I don’t think that your problem is related to the DC power jack. Power jacks do not fail like that. Usually power jacks fail over an extended period of time and connection between the power adapter and jack gets worse day after day, but they do not die overnight.

First of all, check the AC power adapter. Test your adapter with a voltmeter and make sure it outputs correct voltage. Replace it with a new one if it’s dead.

If the power adapter works properly, most likely your motherboard has died.

I have a problem with my digitizer of my Toshiba Tecra M7: The pen works but no everywhere. I don’t see the cursor, and I can’t click in left border and top border (when the M7 is in laptop configuration: open with the key board).

I’ve tested on Vista and Unbuntu, it’s exactly the same problem.

I’ve dismounted the LCD and the digitizer. The reference of the digitizer is SU-14W06E-01X and the reference of the PCB is PWB-A737 XAB.

I can’t find a replacement digitizer on Internet. Only the reference SU-031-A02 is available. It’s the reference for Toshiba R10, M4 not M7 (or even R20). Have you an idea of what digitizer reference can work on my Toshiba Tecra M7?

Laptop information:

Second hand laptop from USA.
Laptop part number: PTM70U-00C007
Model: Tecra M7-S7331

Thank you very much.

Here’s the digitizer part number for your Tecra M7: P000464380
Google the part number and you’ll find it.

My Dell computer isn’t working properly. The battery symbol on the bottom claims that its plugged in but not charging. Unfortunately, whenever I pull the charger out, my laptop immediately shuts down.

Most likely your problem is related to the battery. Apparently the battery is not working properly and cannot power the laptop when the charger is unplugged. The first thing to do is testing the laptop with another known good battery, if you can find any.
If the laptop works fine with another working battery, your battery is bad and you need a new one. If you still experience the same problem even with a new battery, most likely there is a problem with the motherboard.