Studio Max gets Jammed.

I have v4.0 of studio max, cracked,

My System Specifications:
=======================
Dell Optiplex G1 (Branded Desktop)
550 MHz Genuine Intel
160MB Ram
8GB Hdd
Studio max v4.0

I know cracked softwares are not good, but what prob. I am having right now is that whenever I wana use some tools, like adding a camera to scene, bevel a text, and sometime even during rendering scenes, my studio max gets jammed, halting whole damn system, even mouse pointer...and I hear a sound "Ghrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr" and nothing. so what I then have to do is press restart button.

Actually, I used the same version, installed from same CD on a non branded system, cracked somehow, 400MHz, but it never got jammed.

Now I wana ask is that is there fault in my machine or that crack software? If its the machine, then I change it, if its the crack app., I reinstall and crack it somw other way.

@Admins: I think I have made no offence, coz I never asked for anything banned here. So plz dont be angry. If according to you, i did some mistake, then warn me plz. So i beware again. []. You know a man can never be perfect unless he is taunted/criticised