if you have admin its easy, just go delete system32. or run memz or whatever of your choice. itll get the job done.
if you don't. just go find a lot of viruses and vinesauce joel the computer
if you don't want whatever is on it to ever be recovered. use this https://eraser.heidi.ie/
alternatively, just don't link your drug activities to your crypto.
and just use a crypto mixer to do the same thing
Moneros pretty sweet but its not the damn money laundromat