From this site; http://aumha.org/a/stop.htm it looks like a bad driver is responsible. At that site click the C2 link in the right hand column. Check the XP links for Microsoft Knowledge Based articles.
No details of your computer but did you make any hardware changes recently, or upgrade any drivers?
If you can get into Safe Mode you may be able to disable the driver in Device Manager or see if it is a graphics driver changing the screen resolution to the lowest possible allows you to reboot into normal mode and retrieve your work.
Safe mode guidance here;
I could really use some help. I'm just about finished with a huge project, but I now can't start up my computer. What's happening:
Windows XP, sp2
On startup, it get's all the way to the where it says "window's is starting up" (when it's about to give you the options to select a profile), and I get the blue screen of death. Part of the info:
Stop 0x000000C2 (0x00000043, NOTE:the following nummber is always different: 0xDC2B000, 0x00000000, 0x00000000)
I've tried to boot in safe mode(s), but it still crashes at the same spot. Any ideas? I'm really in bad shape.
Thanks for the time. I appreciate it.