>>7
Writes random trash to your memory-mapped EGA/VGA display adapter.
Only on x86 and only in real mode, which no one here would see.
And then continues on writing, until it overwrites your protected mode's Interrupt Descriptor Table, and disk-writes probably fail, while it attempts to follow the newly-minted pointer you just wrote with with random data, and starts executing shit at a random existent-or-nonexistent memory location, the latter causing a kernel panic due to trying to access invalid memory.
Where do I send your cookie, clever girl?