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June 24th, 2024 17:39
Dell Inspiron 5400 AIO-Driver Date: 04/2024 Driver Version: 1.27.00-Bug in update
We have 10 devices that are all experiencing the same problem at the same time due to Firmware update. We are in a school building and all devices are connected to Smartboard (External Monitor) via HDMI and the audio will no longer work from any of our Dell devices while connected, due to Firmware download. I saw it with my own eyes...was working perfectly fine and seconds after download the external audio was removed and no longer will come back. Tried every update, diagnostic, factory reset and even rolled back Firmware update and nothing! Have other brand devices all working fine...like I said...I have narrowed it down to this particular firmware update and need help finding a resolution. Who to contact..etc...
Thank you in advance.
isaac.medina
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July 8th, 2024 16:56
I have the same issue, 6 devices 5400 in classrooms where we use TVs to teach.
I have downgraded to BIOS version 1.24
I even had to paid to Premium Support to Dell which I believe is unfair, since this issue was not caused by user but for the computer updates. They're still working on it (It's been two weeks since I paid)
RoHe
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45.2K Posts
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July 8th, 2024 19:45
Have either of you tried updating BIOS to v1.28.0?
Or, tried doing a BIOS Recovery, rather than just a downgrade? You'd need the .rcv file for a prior version, eg 1.26.0, on an empty USB stick, assuming HDMI worked in that version or the .rcv file for an even earlier version where HDMI worked.
Read/follow the BIOS Recovery instructions for Desktop and AIO PCs.