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Toshiba laptop no video

August 6, 2010 at 21:45:14
Specs: vista

when I turn my laptop on, the monitor is black. it does nothing. also, the green power light is on, but the lights that show caps on and number locks are not working. any suggestions would be greatly appreciated...

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#1
August 6, 2010 at 22:03:53

Laptop no video (or video problems), and battery, AC adapter, power jack T shooting.

See response 1:
http://www.computing.net/answers/ha...

DO NOT plug in or unplug a monitor's video cable into / from a video port while the computer is running. Doing so can damage the monitor's circuits and/or the video adapter's circuits.

Some laptops will display on an external monitor without you having to do anything.

If you get no video on an external monitor, some laptops have a key combo that you must press to toggle the display to external video only / sometimes both / built in display video only - see the Owner's or User's manual for the model.


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#2
August 7, 2010 at 10:54:56

Hi. thanks for the speedy reply. I hooked an external monitor to it, and absolutely nothing there either. I checked the combo keys you suggested too, and did that and that screen was black as well. What I am wondering is with the 3 lights not working next to the power button, that would seem to be some type clue to another problem.. I called toshiba and computer is no longer in warranty, and they want $425 to fix..I did manage to atleast squeeze out of him that it sounds like a system board problem.. Could you possibly tell me is that something that can be fixed, and could I get it done reasonably without breaking my already broke bank?!?....lol...Thanks.

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#3
August 8, 2010 at 08:11:56

Have you dropped the laptop, or have you spilled liquid on it?
If you have, those are the most frequent things that cause damage that require major components to be replaced.

"What I am wondering is with the 3 lights not working next to the power button, that would seem to be some type clue to another problem.."

See the info at the first link in Response 1 regarding the battery, AC adapter, power jack T shooting.

Your computer will not start up if the battery can't charge to at least a minimal capacity, or if it's been drained to below that capacity.

If there is nothing wrong with your AC adapter or it's connection and the jack in the laptop.......

Laptop main batteries usually work as they should for a year or so, then they begin to rapidly deteriorate. From what I've seen, by two years they cannot be charged to anywhere near their full capacity, and it gets worse after that.
They often develop internal shorts when they are older. If the battery gets HOT rather than just warm after you have attempted to charge it for at least a half hour, or after you have been using the laptop for a while with the AC adapter plugged in, it's definitely internally shorted and you must replace it. Internally shorted batteries getting too hot have been known to cause the laptop to catch on fire.

Another thing that can happen is the battery develops an open circuit, or an open circuit because a protective circuit or thermal fuse in the battery has been tripped or blown because the battery got too hot.
.......

If that doesn't help, take it to a local laptop repair place that is certified for working on Toshiba laptops and have them analyze it. That will cost you a fee, but at least you'll know whether it would be worth it to spend money on it to fix it.
........

If you have personal data on the hard drive you don't want to lose, that can be copied from the hard drive to elsewhere
- by you buying an inexpensive adapter and using that to connect the hard drive internally to a desktop computer
- or by you buying a 2.5" external drive enclosure, IDE or SATA, whichever applies, installing the drive in that, and connecting that via a USB connection to any computer.



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#4
August 12, 2010 at 22:03:37

First off, I just want to say thanks for replying to my post, I really appreciate your insight to my problem. When your clueless, as I am, when it comes to computer hardware issues,(and it seems as if most the people I know are as well) it sure helps just to have someone give you somekind of idea where to start, so thanks for that. I have not dropped nor spilled anything on the laptop. I wanted to know when you were talking about the battery,

"Your computer will not start up if the battery can't charge to at least a minimal capacity, or if it's been drained to below that capacity."

I'm confused about which battery you are talking about. Is the main battery the same as the internal battery?...lol..(i did tell you I was clueless...lol) and if you are talking about the internal battery, can that be replaced/repaired on its own, or is that part of the circuit board and the whole thing will have to be replaced?

I think I am going to take your advice at this point and have it checked out, atleast I will know for sure what I am dealing with...
If I can, I will follow up on here when i find the outcome. so If anyone else has this issue, hopefully It can be some help to others. I was on another site looking for help, and I found a post which a gal was having the exact same problem to a T, but she never reposted her findings, and I was bummed cause I couldn't contact her directly...


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#5
August 13, 2010 at 10:47:35

All laptops have two batteries.

- a tiny cmos battery that is required to retain the time and date and other custom settings the user has made in the bios Setup when the computer is not running, even when all other sources of power are disconnected - that's always inside the case and may or may not be easy to change. That may be a single one piece unit, or multiple cells connected together. That may or may not be inside some sort of casing. That usually lasts at least 5 years - it may last a lot longer than that. Some are rechargable and charge when you plug in the AC adapter; some are not rechargable. There is often no info about that cmos battery in the User's or Owner's manual for the laptop, it's usually not on a parts lists for the model, but there is usually info about that in the Service and/or Maintenance manual for the model.

- a much larger battery, or usually, it's actually a battery pack because multiple individual cells are connected together inside of it, that provides the major power to the laptop even when the AC adapter is not connected to the laptop, if the battery is charged up enough. I can that the main battery, others just call it the battery because they're not likely to be talking about the cmos battery. That battery, or battery pack, is always inside a casing of some sort, and has contacts on it that connect to contacts inside the laptop in the socket where you install it.

Both batteries are internal, technically, but, of course, the main battery is always easy to remove from the outside of the case.

The main batteries are never warrantied for longer than a year.
If your main battery is a lot older than about two years old, you're likely to have problems with it.

If there's something wrong with the AC adapter or it's cord or the plug on the end of the cord, or the power jack that plugs into on the laptop, the battery may not be getting charged properly when the AC adapter is plugged in .

If the battery is not charged to at least a minimal capacity, for whatever reason, whenever the AC adapter is not connected, the computer will not start up normally - either it won't start up at all, or it starts up but you see no video and the hard drive is not flashing it's led.

Most recent or more recent laptops cannot start up normally if only the AC adapter is connected to it - the battery must be installed as well, and be capable of being charged to at least a minimal capacity. If the main battery is really old it may have become defective and is no longer be capable of that, and in that case, the computer will not start up normally even when both the main battery and the AC adapter are connected to it.


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