Just got this question from one of my customers asking how to launch CTRL+ALT+DEL on their HP laptops when they are doing VPN connection and remote back to their office PCs.
Apparently they needed to call up CTRL+ALT+DEL to change their passwords. This is usually because their laptops have got an organization password policy to expire in 30 days and once their passwords has expired, they will not be able to login via VPN. Based on normal situation, when you are remoting back to your office PC, the standard command to call up CTRL+ALT+DEL from a remote session is normally CTRL+ALT+END.
However, HP laptops seems to act differently, the key combination to call up CTRL + ALT + DEL is CTRL + ALT + DEL + Fn where the Fn key is the function key found on most modern laptops.