Packard Bell black screen after selecting second screen

[nemaik]

So I was messing around with my laptop and I came across ''only second screen''. I thought I was enable to connect my smart tv to it so I clicked on it and boom. My computer only shows a black screen, I've tried rebooting it but it does not seem to work. I managed to go into bios and do a system reperation but it didn't seem to work because a anti-virus was protecting it.

EDIT: Yes, the packard bell logo loads up but it turns black when I'm supposed to log into my account.

 

[theyeti87]

There should be a hotkey for switching between display types for laptops. What is the make and model of this laptop?

 

[nemaik]

There should be a hotkey for switching between display types for laptops. What is the make and model of this laptop?

Yes, there is a hotkey for switching between display types, but clicking it doesn't do anything. The model is: EasynNote ENTF71BM.

 

[lakimens]

Plug a monitor in it and then reverse the options you made before.

 

[nemaik]

Plug a monitor in it and then reverse the options you made before.

This did not work. I've tried two monitors and it just says ''No signal''.

 

[lakimens]

Try going in safe mode, and reversing settings, or if that doesn't work, go into system repair.
You can go into safe mode by pressing F8, and then selecting safe mode.
You can go into system repair, by pressing F8 and selecting repair your computer.
You should get a recovery menu, the easiest to do is system restore or startup repair.
Try system restore first, restore your system to a date before the problem.