Who wiped clean Hillary's server, when, where, how and why?

HILLARY DENIES SHE WIPED IT CLEAN.

POWER LINE, (VIDEO AT THE LINK):

ON THE SERVER, HILLARY PLAYS DUMB: “LIKE WITH A CLOTH OR SOMETHING?” 

Hillary Clinton took some questions at an event in Las Vegas today, and a reporter asked her whether she had wiped her home server clean before turning it over to the FBI, as news reports indicate. Hillary responded in her usual condescending style, failing to answer the question. When the reporter repeated it, she played dumb– “Like with a cloth or something?”–and disclaimed any knowledge of how digital devices work. You almost have to see it to believe it:

THEN WHO DID?

WHEN?

WHERE?

I HOPE GOWDY GETS HER TO ANSWER UNDER OATH.... AND SOON.