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HP OMEN 17-CM2005NT i7 13700HX 17.3 16 GB RAM 1 TB SSD 8 GB RTX 4060 165Hz

My computer: HP OMEN 17-CM2005NT 7P6D8EA Intel Core i7 13700HX 17.3" 16 GB RAM 1 TB SSD 8 GB RTX 4060 165Hz FreeDOS Gaming Laptop

I need help. I left my computer idle for only 15 minutes and when I came back my computer was working but the screen was off. I tried to turn on my screen, but no matter what I tried, it didn't work. When I turn my computer back on, I can hear the login sound, but the screen is pitch black. When I connected my laptop computer to another monitor with an HDMI cable, there was no image on either screen, but when I tried to turn off the computer while the two screens were connected, the screen of my laptop computer brightened and turned off. I would be very glad if you help. Thanks.

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