There are 3 key parts to an BSOD error
the error itself (example: KERNAL_STACK_INPAGE_ERROR). these are all upper case characters with underscores between words.
Then the stop message (example: stop:0x0000007A and another 4 sets like this in parenthesis).
and finally the file which caused the error (if listed) can help to determine the problem as well. After the stop message it may appear with "in file ntoskrnl.exe" or another file name.
Aside from that, what were you using when it happened, and what have you tried so far.
Have you unplugged any/all external devices besides keyboard, mouse, monitor?
Have you recently installed something?
Have you recently browsed hacker sites?
Have you recently browsed un-trusted sites?
lots of questions, please go into further detail. Thanks in advance