Toshiba a200 laptop Have black screen even tho laptop has booted up, going by the usual sounds.Took battery out and used ac adapter, but same problem.Switched power off several times, left off over night but still same problem.Help please

Hi, Try to Upgrade BIOS.
This will work same problem i had with my HP Notebook....
My laptop was also working good without AC adapter and no response on Charging connection.

Is the AC Power adapter the original adapter of the laptop? If it is, try to drain the battery and charge it for 8-12 hours without using or opening the laptop just charge it. After charging, remove the power adapter as you open your laptop. Make this way a habbit of using and charging your laptop to make the charging and battery life last long.

boot problems

A200 series laptops are very good normally but don't boot up if there is a device in the USB slot or a CD/DVD in the drive.
If it still refuses to POST, remove the AC Adapter, remove the battery and remove the hard drive.
Power the unit up without the hard drive and it should complete POST and complain that there is no hard drive. If that doesn't work remove AC adapter, ensure battery is disconnected and remove hard drive and RAM. Try again. If it still doesn't work, you have a mother board fault and it needs a service centre. www.Toshiba.com will help you out.
If it does work at one of the options, when you have closed the laptop down, replace the RAM first and test, then the Hard Drive.

When working download updated BIOS from Toshiba.com
Hope this fixes your problem.

Try removing / swapping / reseating the memory.

Try booting with one stick only, if the top slot doesn't work, try booting the bottom slot. Try both sticks.

Let me know what happens.

Sounds like the screen is faulty I would check the screen connection to make sure its not lose but I would say the screen is almost gone.

You may need to replace it.

Ensure the wattage and ampage matches. If it does, then your system board might be gone.

The problem is probably not in the motherboard itself, but may be internal to the laptop.
From what you've described the problem is either in the AC Adapter itself or in the power supply inside the laptop (the area where you plug the AC adapter into the computer.
The first thing to try is another AC adapter if you can get a hold of one or purchase one if need be as it's the most likely source of the problem. More than likely it's providing enough power for the system to recognize it's attached and draw power from it, but there is likely a short inside it or the cords keep the power from being constant.
If you do not have a full adapter to test with, you can replace the end that plugs into the wall with and universal plug - something you can buy at major retail stores. The adapters take a lot of wear and tear and can be damaged from all the stuff we put them through.

if the fan is not running continuously then its the fan ans board problem.because the board is getting hot and fan is not running so the board is getting overheated and the machine is nor working.and if the power light is ON and fan is running but only the screen is black/blank then its the problem of inverterboard.the cost of new board is $25 get it replaced fromn near by laptop repair center. thanks.

This sounds like a hard drive is, or has failed. Either that or the RAM (memory has gone bad)
Did you let the laptop overheat? Was it left on for a long time? Or is this just an old machine ?
I would replace the hard drive, and reload the operating system, that is if you really want to keep the laptop. If that solves it great! Also, did you notice if there are any "beep" noises, or error messages when it acts up? Often times, you can go on the internet and find out what the messages mean.

If the battery is out of charge, and the computer does not start at all, then you need to replace the AC adapter.

Here you find prices:

Toshiba Satellite Pro A200 AC Adapter $64.79 - LaptopTraveller.com Toshiba Satellite Pro A200 15 TO 24 Volt 120 ... $74.58 - BatteryFuel Toshiba Satellite Pro A200 AC Adapter $67.95 - dsmiller.com