acer laptop went black with a box asking for current password i put my password and it dont work

[mariafrivera94]

went black and beeps with a box asking for current password i put my password and it dont work

 

[C12Friedman]

I will suspect malware here, following this guide may help http://www.tomshardware.com/forum/8263-63-simple-free-guide-removing-malware