A:AnswerIf you have to use that very specific email You could read through this apple support page to narrow your issue.. as I can now see exactly your screen and such.
source: https://support.apple.com/en-us/HT204075
otherwise second option is to get the Geek Squad Email service.
A:AnswerIf you know your other log in Credentials try using this web site page ...
source: http://www.askdavetaylor.com/i-forgot-my-windows-8-login-pin-now-what/
This way you can use alternate sign in options otherwise reply if need further help...
A:AnswerWhat type of computer is it?
normally if it is a standard desktop you connect a HDMI, VGA DVI, ect.. from tower to the monitor.
and a power plug from tower/pc to a wall outlet
source: http://www.gcflearnfree.org/computerbasics/setting-up-a-computer/1/
Otherwise try Geek Squad service ....