PC shows clear images with VGA, yet HDMI connection drops when Windows launches (Ryzen 5 3400G + A320M-K)
PC shows clear images with VGA, yet HDMI connection drops when Windows launches (Ryzen 5 3400G + A320M-K)
Hey there, I’m looking for some guidance on this odd display problem. Setup details: Motherboard – Asus Prime A320M-K CPU – Ryzen 5 3400G with built-in Vega graphics. No dedicated GPU. Old monitor connected via VGA (functioning). Attempting to link an Android TV through HDMI. Issue: When I connect the TV via HDMI, I see the BIOS and motherboard logo. But once Windows loads, the screen disappears and says “No Signal.” Reconnecting the VGA monitor fixes everything. Even when both are connected simultaneously, the TV remains black—no motherboard logo appears during boot now, even though Windows lists it as a secondary display. I noticed the TV briefly displayed the Windows screen for about a second before going blank again. What I’ve done: Installed the latest IGPU driver, enabled “IGFX Multi Monitor” in BIOS, swapped HDMI cables, tested various ports—other devices and laptops work fine. Still, no signal from PC when Windows starts. Any thoughts? Could it be a driver problem, resolution mismatch, or something else? Thanks for any advice—I’d love to expand my screen space!
Hey there, this seems to be related to an EDID problem. Your TV and GPU aren't communicating properly and aren't displaying their specs correctly. Are the BIOS splash screen visible? Does the Windows startup screen appear? Does the screen go blank right after logging in? Which Windows version are you running? Is it possible to boot into Safe Mode? Once you're in Safe Mode, the desktop should appear. If you manage to reach a clean desktop, you might try restarting at a low resolution like 720p at 30Hz and then see what works. You may need to keep booting into Safe Mode repeatedly until you land on a stable setup. After that, experiment with different resolutions and refresh rates. If something functions but resets every time you power off, you might want to use CRU – a tool that lets you set custom resolution settings automatically on each startup.
Thank you for your feedback! The BIOS splash is displaying correctly. The Windows loading animation appears briefly, then the screen goes dark just before the login screen loads. I'm using Windows 11 and haven't tried Safe Mode yet, but I'll give it a try.
It seems Windows 11 encountered another issue. You might keep your two monitors connected to maintain some interaction. Experiment with changing resolutions, as suggested earlier, to determine if a fix exists. Open Device Manager to identify any devices with a yellow icon indicating driver requirements. Certain monitors or TVs may need specific drivers for higher resolutions. Have you verified your TV settings? Accessing TV options on the device can let you adjust interface and supported resolution. While doing so, look for an HDCP setting—toggle it off if active or on if inactive. This setting is meant for copyrighted media but sometimes affects other content. If problems persist, consider booting from a Linux live USB to test if the second monitor functions correctly. It won’t resolve Windows 11 issues but may confirm compatibility with your TV. Good luck!