@itsfoss
for last tuxedo laptop, i did not nuke the hard disks. it didn't have windows at the first place.

but previous two, i wiped hardisks byte by byte.

@zetabeta @itsfoss If it has Windows on it you should really take out the "hard drive" and just replace it with a new one.

Failing that though, you can maybe burn it off with a thousand cycles of dd if=/dev/random

The taint will always be there though--down under the bits. No exorcism is complete. It's best to just never be possessed to begin with.