When i open steam on my xp

[[FF]ASSN.LOC N LOAD JR]

i need some help i have a dell xps 400 and every time i try to open my steam my computer gives me this code c000021a fatal system error i am running windows xp on this system. please help.

[ReBoot]

Make q screenshot of that error window.

[Cathulhu]

http://answers.microsoft.com/en-us/windows/forum/all/blue-screen-error-c000021a-fatal-system-error/549075f8-f695-4047-b747-2b4e118e1ffd?auth=1