Acer Aspire 3 A315-55G-5851 won’t boot after changing some hidden advanced settings in BIOS

Wanting to use the NVIDIA graphics card instead of the internal graphics card on my Acer Aspire 3 A315-55G-5851, I fiddled with a setting or two (I think it was Primary Display, and maybe Internal Graphics) in the hidden Advanced settings of the BIOS.  Here’s a screenshot of the settings page before I made the changes (Unfortunately, I forgot to screenshot the changes): 

I saved the changes and rebooted, only to find out that I couldn’t boot into anything anymore, not even the BIOS itself.  Before this, I was still able to boot normally into Ubuntu, so the cause of the problem must have been the changes that I made to the BIOS.  Problem is that I could not access even the BIOS anymore.  All I get when I press the Power button is a black screen, but the laptop seems to be booting (although not displaying anything on the screen) because the battery and power indicator LEDs on the right side turn on, and I hear the usual soft whirring sound of the fan.

I tried hooking up the laptop to a monitor via HDMI cable.  Still no display, even after pressing Fn+F5 and Fn+F6 several times and rebooting several times.

I also tried performing a battery reset (i.e., power off laptop, unplug power cable, insert paper clip into Battery Reset hole at the bottom of laptop for 10 seconds, remove paper clip, leave laptop alone for 15 minutes, plug power cable back in, turn on laptop while pressing F2 to access BIOS).  Still nothing.  I also tried pressing the paper clip into the hole for 20 and 30 seconds, but still no dice.

Is there hope for me?  What other things can I try to be able to access my BIOS again and boot into my OS again?  Any advice deeply appreciated.  Thanks in advance.
 

First of all, I admit to having been stupid, which brought me into this predicament in the first place. I thought I understood what I was doing, but I was apparently wrong. Still, I’m hoping someone here would be forgiving and kind enough to help me out of this hole.Wanting to use the NVIDIA graphics card instead of the internal graphics card on my Acer Aspire 3 A315-55G-5851, I fiddled with a setting or two (I think it was Primary Display, and maybe Internal Graphics) in the hidden Advanced settings of the BIOS. Here’s a screenshot of the settings page before I made the changes (Unfortunately, I forgot to screenshot the changes):I saved the changes and rebooted, only to find out that I couldn’t boot into anything anymore, not even the BIOS itself. Before this, I was still able to boot normally into Ubuntu, so the cause of the problem must have been the changes that I made to the BIOS. Problem is that I could not access even the BIOS anymore. All I get when I press the Power button is a black screen, but the laptop seems to be booting (although not displaying anything on the screen) because the battery and power indicator LEDs on the right side turn on, and I hear the usual soft whirring sound of the fan.I tried hooking up the laptop to a monitor via HDMI cable. Still no display, even after pressing Fn+F5 and Fn+F6 several times and rebooting several times.I also tried performing a battery reset (i.e., power off laptop, unplug power cable, insert paper clip into Battery Reset hole at the bottom of laptop for 10 seconds, remove paper clip, leave laptop alone for 15 minutes, plug power cable back in, turn on laptop while pressing F2 to access BIOS). Still nothing. I also tried pressing the paper clip into the hole for 20 and 30 seconds, but still no dice.Is there hope for me? What other things can I try to be able to access my BIOS again and boot into my OS again? Any advice deeply appreciated. Thanks in advance.