“A rootkit infection may be the cause of a Windows Blue Screen of Death issue experienced by Windows XP users who applied the latest round of Microsoft patches. It appears that the affected Windows PCs had the rootkit infection prior to deploying the Microsoft patches. Researcher Patrick W. Barnes, investigating the issue, has isolated the infection to the Windows atapi.sys file, a driver used by Windows to connect hard drives and other components. Barnes identified the infection as the Tdss-rootkit, which surfaced last November and has been spreading quickly, creating zombie machines for botnet activity.”

Patrick’s Article
(Patrick’s site is currently being “slashdot-alanched” and is unavailable.)

Tdss-rootkit information

If this is true and you experience this crash after updating you will need to take steps to clean this infection off your computer. This post will be updated as information develops.

If Tuesday’s security updates from Microsoft have crippled your Windows XP computer with the notorious Blue Screen of Death (BSOD), please follow the follow procedures to fix your computer:

1. Boot from your Windows XP CD or DVD and start the recovery console (see this Microsoft article for help with this step)

Once you are in the Repair Screen..

2. Type this command: CHDIR $NtUninstallKB978262 $\spuninst

3. Type this command: BATCH spuninst.txt

4. Type this command: systemroot

5. Repeat steps 2 – 4 for each of the following updates:

• KB978262
• KB971468
• KB978037
• KB975713
• KB978251
• KB978706
• KB977165
• KB975560
• KB977914

6. When complete, type this command: exit

Your computer should restart and everything should be back to normal.

Source:
BLUE SCREEN, UNABLE TO BOOT AFTER WINDOWS XP UPDATE TODAY