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22 Posts
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April 16th, 2025 03:30
Precision 7560 won't display pre-OS environment in external display when lid closed
I previously reported the issue which Precision 7560 doesn't show pre-Boot environment on external monitor when the lid is closed and set to Hybrid Mode. Now I recall the event which Precision 7560 (with lid closed) didn't show the Windows Recovery Environment and pre-boot environment on external monitor anymore, after I updated the BIOS to 1.35 from older BIOS, and I was unable to downgrade.
P.S. external monitor connected to type-c port on the left side of Precision 7560
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dellus1onal
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October 16th, 2025 15:49
Have you been able to solve your issue?
yho
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October 16th, 2025 19:38
@dellus1onal no, it doesn't, even after I updated the bios to latest version 1.42.0
However, if I set to dGPU mode, it shows pre-boot environment and bios settings on external monitor when laptop lid closed
I prefer hybrid mode for power efficiency and energy saving