Toshiba Satellite A200 28M, the display turn completely white on bootup or during loggedIn session

You may have killed your laptop. BIOS have little to do with an OS like Windows, Linux, etc. The display issue is the culprit. Using another computer go to Toshiba website a get the current BIOS for your laptop. Are you able to access the BIOS at all? (press Del during bootup? to enter the Config screen (looks like DOS)

Are you getting into OS after that ??
Usually there would be a welcome screen for all laptops which gives directions to go to BIOS,Select Boot device,etc..

Probably in BIOS you will have an option to set the dely of your welcome screen as well.

Let me know if this helps you.

Regards,
Sreejith

Hello, here are the steps to resetting your computer.

Reinstall Windows from a Disk

1 Turn on your Toshiba Satellite. Insert your recovery disk or the original Windows operating system DVD

into the Satellite's CD/DVD drive. Turn off the computer.

2 Turn on the Toshiba Satellite. In the first few seconds while it is starting up, press and hold the F12 key on your keyboard to access the Boot Menu. (Note: Some Toshiba models may tell you to press "C" to boot

from the CD-ROM). The screen will display boot for this boot up session only.

3 Use the arrow keys to navigate. Select the CD-ROM/DVD drive to highlight it. Press "Enter." Be aware that this setting is for this session only; it is not a permanent change.

4 Allow the computer to start up. Follow the onscreen instructions for reinstalling the operating system from the disk.

Reinstall from a Recovery Partition

1 Boot up the Toshiba Satellite. In the first few seconds while it is starting up, press and hold the F8 key. This will begin the "Advanced Boot Options" menu.

2 Use the arrow keys on your keyboard to navigate the menu. Move the keys to select "Repair Your Computer." Press "Enter."

3 Select your language and keyboard; click "Next."

4 Select your Windows user name from the drop-down menu. Enter your password if required. Click "OK." This will begin the "System Recovery Options" menu.

5 Select the Toshiba Recovery Wizard and follow the onscreen instructions. The Toshiba Recovery Wizard will delete all existing data on the hard drive and reinstall Windows.

Hope this helps!

That sounds like the screen is failing. If the display is white during the boot process than it is failing. You could replace the display but that is more costly than actually buying a new machine.

try booting into safe mode. hit the f8 key during bootup to get that option and see if safe mode works fine. If it does, then the problem is a bad or corrupt video driver. The display itself could be going bad, also, but that seems less likely if you can see the splash screen every time. If you cant boot into safe mode, you may have corrupt OS and need to do a repair install.

I have the solution for the non booting Toshiba that I wrote almost a year ago. This tutorial (written and pics from the repair of my m35) is applicable to laptops that shut down without any warning, laptops that turn on only sometimes, and laptops that simply refuse to turn on (LEDs blink, fan spins up for a second and then everything just goes dead). So if your laptop does not turn on, it goes completely dead within a few minutes after bootup, here's the link to the tutorial. The repair takes about an hour, there's no need of replacing any parts, reinstalling any software or any other thing. The only investment in repairing your laptop with this tutorial is your time. Basically, you can repair your laptop within the hour, without spending any money for any parts or software.
http://imateski.blogspot.com/2008/08/toshiba-satellite-m35x-motherboard.html

I recommend you to reinstall the display drivers of your laptop as the issue may occur due to the corrupted display drivers.

Uninstall the display drivers from Device Manager.
Expand Display devices.
Right click on the display device and select Uninstall.

On restarting the laptop, windows will detect the device and reinstall the display drivers.

You can even install the display drivers from your notebook support website:

www.csd.toshiba.com

Perhaps this can help...
I have the solution for the non booting Toshiba that I wrote almost a year ago. This tutorial (written and pics from the repair of my m35) is applicable to laptops that shut down without any warning, laptops that turn on only sometimes, and laptops that simply refuse to turn on (LEDs blink, fan spins up for a second and then everything just goes dead). So if your laptop does not turn on, it goes completely dead within a few minutes after bootup, here's the link to the tutorial. The repair takes about an hour, there's no need of replacing any parts, reinstalling any software or any other thing. The only investment in repairing your laptop with this tutorial is your time. Basically, you can repair your laptop within the hour, without spending any money for any parts or software.
http://imateski.blogspot.com/2008/08/toshiba-satellite-m35x-motherboard.html

try going to conecting an external display in the mobility center and set it to mirror your laptop

if you have a warranty - have the manufacturer replace the lcd display unit.