Your computer has been posessed by a demon lord of the 436th level of the abyss.
You must sacrifice 13 virgin boys to him, killing each of them with an alabaster inlaid knife with a curved blade made of pure platinum, draining all of the blood into the inside of your computer case, while it is running. Upon the deposit of the 13th boy's blood, the demon lord will become appeased and return to the abyss.