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cnut
May 3, 2016


Problem description: No HDMI signal (DVI works). I built a friend a new computer at my place using the DVI-D port for the monitor (worked fine). When I took it to her place and tried to use the HDMI port no signal was detected. I brought it back to my place and tried it on my TV (my monitor doesn't have HDMI) and I had the same problem. Works fine on DVI still. Strangely, I discovered my computer isn't working on HDMI either. This is a new development as I used to have my monitor and TV going at the same time (both extended and duplicated desktop). Only change for me was a Win 10 Home install after an ugrade a few months ago (hadn't tried HDMI since the install so I didn't know it wasn't working).

Attempted fixes: Checked for latest Windows updates, drivers and BIOS, they are installed. Disabled/enabled Display Adapter in Device Manager. Tried 3 different video cards, cables, tried on monitor and TV - same problem on both computers regardless of configuration.

Recent changes: Her machine is a new build. My machine was upgraded a while ago including going from Win 7 to Win 10. My HDMI port was working fine under Win 7.

--

Operating system: Hers: Win 10 Pro 64-bit, mine: Win 10 Home 64-bit.

System specs:

Hers:
MSI MAG B460M Motar Wifi
i3-10100
MSI RX 570 Armor 8GB OC
Corsair Vengeance LPX 16GB (2x8)
Corsair CX550 (2017) PSU
WD Blue SN550 NVMe SSD 1TB
Acer ET322QR monitor

Mine:
Asrock B365M Phantom Gaming 4
i3-9100F
Gigabyte RX 570 Gaming 4G 4GB
Corsair Vengeance LPX 8GB (2x4)
Corsair CX450 (2017) PSU
Crucial MX300 750GB SSD
HP LE2202x monitor


Location: Canada

I have Googled and read the FAQ: Yes

Thank you!

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cnut
May 3, 2016


Holy gently caress.

Read somewhere to try to unplug my TV from the wall and plug it back in. It worked. WTF lol

e: Just to wrap up, my friend's computer is working fine now. I gave her a DVI to HDMI adapter but she didn't use it. She plugged it in as is and it worked this time so I don't know what happened the first time. Troubleshooting her computer just exposed a problem with my TV, these were separate, unrelated problems.

cnut fucked around with this message at 17:59 on Sep 26, 2020

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