How do I disable the backlighing timeout on the Acer Aspire A515-43-R19L?

I recently purchased this model of Acer laptop on ebay. The owner told me the backlight times out and goes off after only 15 seconds or so. He disabled the timeout in BIOS, but the issue did not go away. Is there another way to force the backlighting to stay on at all times? Is NitroSense only for the Nitro gaming boxes? Someone commented elsewhere that the backlight timeout could be disabled through a setting in NitroSense. Does NitroSense work on other Acer systems besides the gaming rigs? I want the backlighting on the keyboard on at all times.

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JackE

Shutdown machine. Turn it back on and immediately start tapping the F2 key to enter the BIOS menu. Please post phone photos of the INFORMATION & MAIN tabs if possible.

Will_Crump

JackE, I haven't received the laptop as of yet. It hasn't been shipped. The seller on ebay simply gave me a heads-up about this quirk. As soon as I have it, I will post the pics you've requested.