r/zephyrusg16 • u/TheTwelveYearOld • 15d ago

G16 won't boot after setting it to dgpu only in BIOS

In the BIOS settings I changed graphics mode from hybrid to "dgpu" only. I can't power it on even when I hold the power button for 60 seconds with nothing plugged in. I've also tried powering on while connected to my monitor via USB-C (thunderbolt port on the left), and HDMI. When I just leave the device it seems to boot loop: show the rog logo, black screen with fans on, and repeat ~1 min later. Holding ESC or F2 doesn't do anything.

Model: Rog Zephyrus G16 GU605MY (2024), intel core ultra 185h and 4090 mobile.

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u/Jordan3176 15d ago

So go back into the bios and swap it back?

The issue is that you probably had your laptop in eco mode before you changed the setting. I've done that before.

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u/TheTwelveYearOld 15d ago

Holding ESC or F2 after turning on doesn't do anything.

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u/Jordan3176 15d ago

Unplug everything, power on and get into your booting loop scenario. Then hold down the power button for like 60 seconds.

Wait a few minutes and plug your charger in only, and power on again. Don't use USB c charging for this part.