Computer crashes to blue warning screen

[Cannonfury]

3 times now while trying to log on potco through the browser(since the launcher wont work for me) my computer has crashed and gone to a blue screen with a lot of techy computer type writing...saying windows has shut down your computer to prevent further damage to your system...I never read the rest.

Every time while before it happens, my computers fan/I think its the fan..speeds up and makes a real loud sound... like a car reeving up the engine.


I have 2 anti virus things...McAfee and AVG...which is better? McAfee says having more than one anti virus will mess up my computer