Hello
Is this related to your Windows admin account password
or BIOS start-up password (POST password) ?
* If related to Windows account passwod, please check this HP article >> http://hp.dezide.com/ts/start.jsp?guide=cantsignintowindows.net§ion=ccweb&sfs=tdoc&lc=en
* If related to BIOS/startup password before Windows loads
In this case, please enter some password (wrong password) 3 times, press ENTER and you should receive a new window stating system disabled and a code similar to this one :
Please, take note of the system disabled/halted code (write it down and post it back here).
Let me know how it goes. Provide your feedback.