F5F Stay Refreshed Hardware Desktop Issue with RX 6600 and HDMI connection not transmitting signal.

Issue with RX 6600 and HDMI connection not transmitting signal.

Issue with RX 6600 and HDMI connection not transmitting signal.

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Shadox94
Junior Member
11
10-27-2021, 05:37 AM
#1
Hey, I'm facing an issue with my graphics card not sending the output signal over HDMI on my AMD RX 6600. I use HDMI to get 4K at 120Hz HDR. I've tried many fixes but haven't found a working display port cable. Instead, I connected it through a DP adapter and got the display working. However, when using HDMI directly, the system shows no signal right after the logo appears. It boots normally, plays the welcome sound, but no signal appears. I can enter safe mode without issues with HDMI connected, though installing the latest driver in safe mode fails with a system error 192. I've used DDU and tried reinstalling Windows, resetting BIOS, and even swapping RAM or cables. The graphics card is still under warranty. Please advise if anyone has suggestions.
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Shadox94
10-27-2021, 05:37 AM #1

Hey, I'm facing an issue with my graphics card not sending the output signal over HDMI on my AMD RX 6600. I use HDMI to get 4K at 120Hz HDR. I've tried many fixes but haven't found a working display port cable. Instead, I connected it through a DP adapter and got the display working. However, when using HDMI directly, the system shows no signal right after the logo appears. It boots normally, plays the welcome sound, but no signal appears. I can enter safe mode without issues with HDMI connected, though installing the latest driver in safe mode fails with a system error 192. I've used DDU and tried reinstalling Windows, resetting BIOS, and even swapping RAM or cables. The graphics card is still under warranty. Please advise if anyone has suggestions.

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Designerman011
Member
52
10-31-2021, 05:45 AM
#2
Have you experimented with another HDMI cable? The HDMI port on the screen remains functional with other devices.
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Designerman011
10-31-2021, 05:45 AM #2

Have you experimented with another HDMI cable? The HDMI port on the screen remains functional with other devices.

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Hols8888
Member
140
10-31-2021, 09:06 PM
#3
Have you explored alternative drivers beyond the newest ones? It could be a bug in the updated drivers or simply wait for the Windows Update Drivers to install and observe the outcome.
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Hols8888
10-31-2021, 09:06 PM #3

Have you explored alternative drivers beyond the newest ones? It could be a bug in the updated drivers or simply wait for the Windows Update Drivers to install and observe the outcome.

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Milinia56
Member
231
11-08-2021, 05:46 AM
#4
Thank you for your prompt reply. The display functions well on other devices like a laptop. I tested four different HDMI cables and also tried an older graphics driver. I searched for the most stable drivers for the RX6600 but had no success. Noted, it seems that once any driver is installed—whether Windows or another program—it can cause signal issues. It might be related to corrupted Windows files; I ran all the necessary SFC commands and found no problems.
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Milinia56
11-08-2021, 05:46 AM #4

Thank you for your prompt reply. The display functions well on other devices like a laptop. I tested four different HDMI cables and also tried an older graphics driver. I searched for the most stable drivers for the RX6600 but had no success. Noted, it seems that once any driver is installed—whether Windows or another program—it can cause signal issues. It might be related to corrupted Windows files; I ran all the necessary SFC commands and found no problems.