I suddently realize it's a terrible idea, panic and throw the computer out of the window.
The next user gets hit by the computer I threw.
The PC desintegrates due to traveling at lightspeed through the atmosphere, making incredibly small chunks of shrapnel to go flying at MACH-6.
The next user gets impaled by the chunks.
The chunks completely vaporized before they got anywhere near me.
The next user is trapped inside the Sun's core, where you are turned into nuclear fusion fuel by the heat and pressures found there.
I am made of iron, which cannot fuse into anything. I just wait it out and soon, the star gets supernova'd and I form a new planet.
The next user is a hydrogen particle in the core of the Sun.
Through quantum tunneling, I randomly fuse with another fellow hydrogen particle, and my essence is converted into energy. As photons, I take millions of years to reach the surface of the sun to be transmitted out in space. I span the immense distance to earth and am absorbed by a plant and converted into chemcial energy, where I am then eaten and incorporated in the vast food chain of the planet. I become part of everything living, and live on forever.
The next user is faced with SCP-500-J http://www.scp-wiki.net/scp-500-j
Fortunately, the antimatter came in the form of antineutrinos, which do not react much at all with anything. In addition, part of the bunker's wall was weak enough that I made an exit through it.
The next user is a positron which is about to collide with an electron, which will result in annihilation.