A problem

A few months ago my computer began to crash shortly after logging in to MMOs (WoW/CoV) and i simply took it as a sign to stop playing...Lately I've been trying to fix the problem as I am now bored. I tried the repair function in each game and  updating Directx but neither worked. As I am not a master of computer I am asking for any ideas or suggestions as to a fix.
The only pertinent information I have about the problem is that sometimes when it crashes it give me a blue screen mentioning errors and stuff about things like "0x00000000" and other similar number/letter arrangements.
TLDR: Help me fix my broken shit please

Replace the following components one by one until it works, one of them is likely causing the problem:

Graphics card, RAM, CPU, mainboard.

Stop playing MMORPGs.  They are the anti-game.