If you get changed with a RIPA password offence it’s almost certain going to Crown Court and an (expensive!) jury trial.

CPS won’t (as a matter of policy, and also can’t afford to waste time and money) spend time trying to prosecute a forgotten password for old laptop, unless it’s connected to some other serious, evidenced, allegations.

(I was on a jury in just this situation. Reasonable doubt is a high bar and prosecutors know this).