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When I try to use my Toshiba laptop without the mains adapter plugged in, the screen goes completely blank after a couple of minutes. Pressing escape or any other button does not do anything. I have to remove the battery then plug in the mains and restart it. There is always plenty of battery life. My computer is less than 12 months old.

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Your battery is not charging anymore the capacitor inside of it is weak or leaky that's why they cannot hold the voltage charge you need to replaced it.

Posted on Apr 16, 2008

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Posted on Jan 02, 2017

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My loptop is an Averatec 7100. How can I test the motherboard? I took it to a computer repair shop and they said is the motherboard, I want to know how can I test it on my own.


This is more of a system diagnosis that an actual motherboard testing procedure, but since all components attach to the motherboard in one way or another it could count as a prcess of elimination......

Laptop is dead. How to troubleshoot the problem.
In this post I’ll explain how to troubleshoot a dead laptop and find the problem. The following troubleshooting tips are not model and brand specific, they should work for most laptops.
Let’s take a look at two different scenarios.
Example 1. The laptop is absolutely dead.
When you plug in the power adapter and press on the power button, there is no signs of life at all. The laptop will not make usual noises, LEDs will not light up, the fan will not spin, the screen is blank and black, etc… In short, the laptop is dead.

What you can do in this case?
1. Make sure the wall outlet is working and the laptop DC adapter is getting power from the outlet. Try another wall outlet.
2. Test the laptop DC power adapter, make sure the voltage output is correct. You can test the DC power adapter with a voltmeter.
3. Let’s say the DC adapter is fine and the adapter outputs correct voltage. In this case unplug the power adapter from the laptop, remove the battery, wait for 1-2 minutes, plug in the adapter and try turning on the laptop again.

OK, you tested the adapter and it’s bad. If you decide to replace the original DC adapter with a generic one, you’ll have to follow this rule:
The voltage output on your new adapter has to be exactly the same as on the original adapter. The amperage on the new adapter could be the same or higher.

If nothing helps and the laptop is still dead, apparently the motherboard is fried or there is a problem with the DC power jack. It’s possible the DC power jack is broken and the motherboard is not getting any power from the adapter. In this case you’ll have to disassemble the laptop and replace the power jack.
Example 2. When you plug the DC power adapter and press on the power button, the laptop starts making normal noises, the LEDs work properly but noting appears on the screen. The laptop will not start.
First of all, take a closer look at the LCD screen. Look at the screen under bright light. It’s possible that the image is still on the screen but it’s very faint.
If there is no image on the laptop LCD screen, test the laptop with an external monitor. Connect an external monitor to the VGA port on your laptop and turn the laptop on. You can toggle video output between the internal LCD screen and external monitor by pressing Fn and F4 keys simultaneously on HP laptops, Fn and F5 keys on Toshiba laptops, Fn and F7 keys on IBM laptops. Other laptops may use different key combinations.
Let’s say the external monitor works fine but the internal LCD screen has no image at all. If that’s the case, your problem could be related to the LCD screen or the video cable. Also, make sure the video cable makes good connection with the motherboard and the LCD screen. Try reconnecting, reseating the cable.
In my case, both internal and external monitors were absolutely dead. Neither of them had image. That means the problem is not related to the LCD screen or the video cable. From my experience I know that this problem could be related to the laptop memory.
Try reseating the memory module, maybe it’s not making good connection with the memory slot. Try cleaning contacts on the memory module with pen eraser. Try moving the memory module into another slot. Try replacing the memory module with another known good module, it’s possible that your original module is dead.
If you have two memory modules installed you can try removing them one by one, it’s possible that one of the modules is bad. Try installing different memory modules into different memory slots.

In my case reseating, swapping the memory module didn’t help. I was pretty confident that my problem is not memory related and I moved on.
Try removing battery, hard drive and DVD drive and turning on the laptop without these components.
Also, try turning on the laptop with an external monitor when the video cable is unplugged from the motherboard. If the laptop start with video on the external monitor, apparently there is something wrong with the laptop display panel.
Finally, disassemble the laptop and removed the motherboard.
1. Motherboard. Like on most laptops, in my case the video card is integrated into the motherboard
2. CPU with heatsink and cooling fan.
3. Known good memory module.
4. The power button board witch you need to turn on the system.
5. Working DC power adapter.

Still cannot get any video on the external monitor. The system turns on, the cooling fan starts spinning but there is no video.
At this point I’m 95% sure that the motherboard is dead. CPU failures are not very common, so it must be bad motherboard.





Oct 13, 2009 | Computers & Internet

2 Answers

When i turn my laptop on it wont load the toshiba screen


in the cmos setting load default and save it. restart the computer

Aug 13, 2009 | Computers & Internet

1 Answer

My srceen goes Blank


Hi,

first try booting the laptop and pressing the Fn key with the numerical ( numbered key ) that has a picture of 2 screens on it. This is for booting to an external monitor. you could also try adding an external ( pc monitor ) this will eliminate any motherboard Faults.

Secondly, the graphics chip driver may be corrupt or not installed correctly. if you have a restore cd, you could try booting the laptop, with the cd in the drive.

you can then try, to see if the settings in the bios are all correct, by booting/starting the laptop and pressing esc or F2 or delete immediately as the laptop starts. ** Be-Careful** what you adjust.
My suggestion is to look for. ** default settings tab** or load setup defaults.

these are the obvious things to try, before assuming that you have a faulty graphics chip or motherboard fault.

Mike @ compurepair.

Jun 12, 2009 | Acer Computers & Internet

1 Answer

My toshiba satellite p200-140 laptop will not start up. the power button lights up but nothing else happens. it was working fine last night


My laptop had a similar problem. I left my laptop running and some time later when I went back to my laptop, it would not startup. The power light seemed to be on but the laptop would not function. I tried several things like pressing on the power key for some time without any success and also tried all sorts of alternate buttons and sequences.

I resolved the problem by first disconnecting the power cord then by removing the battery for 5 minutes. I then re-installed the battery then connected the power adapter.

As soon as I turned the power button 'ON', the laptop booted up again.

Hope this works out for you.

Regards,
Rick

Sep 28, 2008 | Computers & Internet

1 Answer

My hp pavilion laptop showing only blank screen not starting at all


Hey,

Contact your dealer or HP for repair service, if you got warranty it will be free, you can also try, removeing the laptop from the power adapter, and remove the battery for 1 minute, plug in the power cord and try starting up. other thing you can try is removeing the memory modules, starting up, then it beeps, place the memory back. start up.

Thanks,
Ekse

Aug 29, 2008 | HP Computers & Internet

1 Answer

Help needed to get power connected.


There are a few possibilities.

If it's been plugged in continuously, the adapter may have simply overheated. Allowing it a few minutes to cool down without being plugged in could possibly fix it. Try unplugging the power cable from both the wall and the laptop for 30 minutes and give it another shot. This might work.

The other, less happy, possibility is that your adapter overheated to a critical point or was struck by an electrical surge and is damaged beyond repair. You can order a new one from a site like eBay or directly from Toshiba. Looks like you could get one from eBay for around 25$US incl. shipping but be careful and make sure you order the right thing.

Some eBay results: http://search.ebay.com/search/search.dll?from=R40&_trksid=m37&satitle=ac+adapter+portege

Mar 13, 2008 | Computers & Internet

2 Answers

My kids have tried to get onto my laptop without knowing the password . now the laptop will not come on . the light showing the power is on is displaying but the screen is totally blank . any sollutions...


hello chunk
Are you sure that your laptop is not in sleep mode .
Try turning off it by pressing your power button for a couple of minutes and then turn on .
Also charge your battery for at least one hour before operating it upon.

Waiting for your rating

Feb 14, 2008 | Computers & Internet

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