After updates, a laptop stopped displaying on any external monitor. We unsuccessfully tried many things
- Check configuration (refresh rate, force detect, …).
- Update everything (drivers, OS).
- Check for hardware failure (cable, monitor, port, …).
- Soft OS reinstall.
- Check if the external display works with another OS booting on a USB flash drive.
Until something finally worked: Re-installing the previous version of the BIOS. However, we will obviously need to update it at some point. How can we proceed with a BIOS update from here?
| Feature | Version |
|---|---|
| Model | Vostro 14 3430 |
| OS | Windows 11 Pro |
| Port | HDMI |
| Latest BIOS version (broken) | 1.24.1 |
| Previous BIOS version (working) | 1.23.2 |
The changelog contains:
- Fixes & Enhancements
- Added the Connected Service Delivery option under Update Recovery in the BIOS Setup.
- Importance
- Dell Technologies highly recommends applying this important update as soon as possible. The update contains critical bug fixes and
changes to improve functionality, reliability, and stability of your
Dell system. It may also include security fixes and other feature
enhancements.- Important information
- This BIOS contains the new 2023 Secure Boot Certificates.
- Once the BIOS is upgraded, you cannot downgrade the BIOS to versions earlier than 1.19.0. BIOS downgrades are restricted when
there are security updates and important fixes with earlier versions
that impact the functionality of the system.- BIOS updates take no more than 5 minutes to be installed on your system. You can install the updates in the background while using the
system.
