Hi all

A little tech help required here.

Was surfing a little porn today when this screen popped up saying that my laptop was locked by something called the "automated information control system (ACIS)".

The reason that I have allegedly viewed banned or kiddy porn sites or stored pirated content - none of which is true.
The screen has the Garda name and symbol on it and says I must buy a "Ukash voucher" and enter the code etc.

I have no doubt that this is a scam but any ideas on how to free up laptop.

I can't minimise screen and there is no web bar address at the top.

Any help or assistance would be appreciated.