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3 Posts
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40
January 20th, 2025 08:43
Precision 7520 BIOS External monitor via USB-C
Good morning,
I have a technical problem with my DELL Precision 7520 laptop. After the latest BIOS update (1.39), I cannot use an external monitor connected via USB-C.
After connecting the monitor, Windows either freezes completely, does not respond to anything and you have to reset the computer, or detects the monitor as an unrecognized device.
I tried to downgrade the BIOS to version 1.37 (in this version the monitor worked without any problems), but during installation an error appears ( 
) and it returns to the latest version 1.39.
Can you help me with this issue?
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HedgeFundManager
2 Intern
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476 Posts
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January 20th, 2025 19:49
Check to see if there is a password in the UEFI and reset it to defaults
Wildmor
1 Rookie
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3 Posts
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January 21st, 2025 07:14
I dont have UEFI password.
I managed to downgrade to version 1.38, but unfortunately I still get the same error when downgrading to version 1.37. BIOS Log shows only Logs: "Low battery"...
Regarding the first problem: How do I report this problem to Dell if the laptop is out of warranty?
Wildmor
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3 Posts
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January 21st, 2025 11:22
In Safe Mode when i plug in external monitor via usb-C i got a lot of errors in Event Viewer with same message:
"dcom got error 1084 attempting to start the service shellhwdetection"