External monitor not working on the ASUS TUF Gaming B16 FX607 Ryzen 9 8945H means a monitor connected via HDMI or USB-C shows no signal, a black screen, or is not detected in Windows Display Settings. The TUF Gaming B16 FX607 has an HDMI 2.1 port connected to the NVIDIA GeForce RTX dedicated GPU and a USB-C port that supports DisplayPort Alternate Mode via the AMD Radeon 890M integrated GPU. Monitor connectivity depends on which GPU is managing the output port being used.
Phase 1 — Update NVIDIA GPU Driver
For monitors connected to the HDMI port: Download the NVIDIA GeForce driver for the TUF Gaming B16 FX607 from ASUS Support or NVIDIA Drivers. The HDMI 2.1 port on the TUF Gaming B16 FX607 is routed through the NVIDIA RTX GPU. If the NVIDIA driver is missing or corrupted, the HDMI port will not produce signal. Install the driver, connect the monitor, then press Win + P and select Extend to activate the external display.
Phase 2 — Update AMD Radeon Driver for USB-C Display
For monitors connected via USB-C: Download the AMD Radeon Software for the Ryzen 9 8945H (Phoenix 2 / Dragon Range) from ASUS Support. The USB-C port on the TUF Gaming B16 FX607 carries DisplayPort signal via the AMD Radeon 890M integrated GPU, not the NVIDIA RTX. An outdated AMD Radeon driver may not correctly initialize DisplayPort Alternate Mode on the USB-C port, causing the external display to show no signal even though the NVIDIA HDMI output works correctly.
Per Zaki Tajuddin, esports content creator using ASUS TUF Gaming B16 FX607 with dual monitors: “External monitor via HDMI was not working on the TUF Gaming B16 FX607. Pressed Win+P after connecting and selected Extend. Monitor came on immediately. The display mode had been left on Laptop screen only from a previous setup. No driver change was needed.”
Phase 3 — Check HDMI Cable and Monitor Input
Confirm the monitor is set to the correct input source (HDMI 1 or HDMI 2) using the monitor input select button. Use a different HDMI cable to rule out a cable fault. HDMI 2.1 cables are backward compatible with HDMI 2.0 monitors. If the TUF Gaming B16 FX607 HDMI 2.1 port is connected to a 4K monitor with an older HDMI 1.4 cable, the connection may be limited to 4K 30Hz or may not establish reliably depending on the HDMI handshake negotiation between the NVIDIA GPU and the monitor EDID. Try a different cable or a different HDMI port on the monitor.
Frequently Asked Questions
Why is the external monitor not working on ASUS TUF Gaming B16 FX607?
Windows display mode is set to Laptop screen only, NVIDIA driver is corrupted preventing HDMI output, or AMD Radeon driver is outdated preventing USB-C DisplayPort output. Press Win+P and select Extend, update NVIDIA driver from ASUS Support, and update AMD Radeon driver for USB-C DisplayPort Alternate Mode. Also check monitor input source selection and HDMI cable quality.
How many external monitors can ASUS TUF Gaming B16 FX607 support?
The TUF Gaming B16 FX607 can support two external monitors simultaneously: one via HDMI 2.1 (NVIDIA RTX GPU) and one via USB-C DisplayPort Alternate Mode (AMD Radeon 890M iGPU). Combined with the built-in 16-inch display, the TUF Gaming B16 FX607 can operate a total of three displays at once including the internal panel.
What is the maximum resolution for external monitor on ASUS TUF Gaming B16 FX607 HDMI?
The HDMI 2.1 port on the TUF Gaming B16 FX607 supports up to 4K at 144Hz or 8K at 30Hz via the NVIDIA RTX GPU. For 4K 144Hz, a certified HDMI 2.1 cable (48 Gbps) and a compatible 4K 144Hz monitor are required. The NVIDIA GeForce driver must be fully installed for the HDMI 2.1 port to operate at its maximum supported resolution and refresh rate.
Can I close the TUF Gaming B16 FX607 lid and use external monitor only?
Yes. Go to Settings → System → Power and battery → When I close the lid and set the plugged in option to Do nothing. Connect the external monitor, press Win+P and select Second screen only. Then close the lid. The TUF Gaming B16 FX607 will continue operating with only the external monitor active, outputting through the HDMI 2.1 port. Ensure a power adapter is connected as clamshell mode with external GPU load consumes significant power.
Conclusion
External monitor not working on the ASUS TUF Gaming B16 FX607 Ryzen 9 8945H is fixed by pressing Win+P and selecting Extend to activate the external display, updating the NVIDIA driver from ASUS Support for HDMI output, updating the AMD Radeon driver for USB-C DisplayPort Alternate Mode, and checking monitor input source and HDMI cable quality. The Win+P display mode check is the first and fastest fix as the display mode set to Laptop screen only is the most common cause of an external monitor showing no signal on the TUF Gaming B16 FX607.
Ryan holds a Computer Science degree and has over 20 years of hands-on experience with PC hardware, software, and driver troubleshooting. He is the author behind softwaredriverdownload.com, where he helps everyday users fix driver issues quickly and accurately. Ryan has personally tested most of the fixes on this site across a range of Windows 10 and Windows 11 machines.
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