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Windows 7: BSOD Toshiba A300D BCCode:c000021a

23 Mar 2013   #1

Windows 7 Enterprise 64 bit
BSOD Toshiba A300D BCCode:c000021a

Hi all,

This is my first post here. I am sure you can help me.

I am running Windows 7 Ultimate 32 bit on a Toshiba A300D-14D. This laptop came with windows Vista 32 bit installed. I checked toshiba's website and the drivers were not developed for Windows 7, (only Vista) so I believe there should be an issue regarding the drivers .
Before I had BSOD and random freezes. I solved the random freezes, uninstalling the graphics card driver from AMD. Now only the BSOD persists.

BSOD description
Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.
Locale ID: 2070
Additional information about the problem:
BCCode: c000021a
BCP1: B3211E58
BCP2: C0000006
BCP3: 75B7D257
BCP4: 0196F880
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

Best regards,

My System SpecsSystem Spec
23 Mar 2013   #2

Microsoft Community Contributor Award Recipient

Windows 7 Professional 64bit


Here are the instructions for posting:

If you are unable successfully boot into Windows because of the BSOD error, Windows has an option to reload registry information from the last successful boot. To revert to the last successful boot:
  1. Reboot the computer.
  2. Near the end of the BIOS messages or graphic, but well before anything appears from Windows, press the F8 key. You may only have a few seconds to get the right spot to press F8 before it attempts to go into Windows. If the BIOS complains about a pressed key or asks you to go into BIOS setup, you've pressed F8 too soon (Don't go into BIOS setup).
  3. When successful, you should see a black screen with white text "Windows Advanced Options". Use the up or down arrow keys to highlight Last Known Good Configuration and press Enter.


My System SpecsSystem Spec

 BSOD Toshiba A300D BCCode:c000021a

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