I have a QWERTY Keyboard Device Filter from an Asus G73jh laptop. For the backslash:\:key......: Ctrl+Alt+ 1st key 2nd row from the top on the right. (Alt+92 also works)
Hello again, it's not working because it's a QWERTY keyboard; the exclamation mark is on the 1 key at the top left and the asterisk is on the 0 key at the top right; you probably need a combination of several keys. Thank you.