Help needed, if you have few moments to spare.

ROG strix G18 (G814JV)

Conundum : Recently I noticed the GPU running at 0 watt and application running in GPU mode resulted in black screen. Then I googled and found somewhere in the internet. Why not set the laptop to GPU entirely. It will force the computer to use the GPU. I set the laptop to GPU mode only. Now the entire screen is black from the boot up.

Now I can't even set the laptop to go back to integrated graphics mode because everything is black.

I assume the setting I changed earlier must be saved in CMOS but this laptop doesn't have CMOS battery or jumper to reset the BIOS. (Not 100% sure)

In the events that the laptop doesn't have CMOS, you should keep the main battery removed for 12 hours and wait for any residual charge in the system to dissipate. Yes, I tried this option now but to no avail.

Second last option: Use the BIOS mode to set the computer back to integrated graphics mode. (But the screen is black)

Request of the article: Can someone with the similar laptop model of mine as stated above. Send me the picture of BIOS setting up until the Integrated graphics option or send me the list of buttons and the number of times I need to press to blindly in the keyboard inorder to change the BIOS to integrated graphics mode or set the BIOS to factory setting mode.

Fixing what's wrong with the GPU will be problem for another day.