Memory Dump in 2000 Advance Server

I’m using Win2k Advance Sever from last 3 months but from yesterday when i boot fist time 2000 after installed winxp (which is working so good now) in other extended partition I’m facing an error during booting 2k & that is:
Physical Memory StartsDumping

PAGE_FAULT_IN_NON_PAGEDAREA

giving some addreses as well then its start counting to restart the system (both OS are in deffrent partitions). I cant figure it out yet what is the actuall prob. I’ll be so thankfull if someone step in toresponse me bcoz I’m the student & learnig 2000 Advance Server but now many of my work is stoped.
Thanks in advance,
Zaxs