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chelseaashleyAug 31, 2025
How to fix Power-rail failure on Dell OptiPlex 5400 All-in-One?
- SSusan MorganAug 31, 2025
If your Dell Desktop experiences a power-rail failure, and the EC ran into a power sequencing failure, replace the system board.
How to fix Power-rail failure on Dell OptiPlex 5400 All-in-One?
If your Dell Desktop experiences a power-rail failure, and the EC ran into a power sequencing failure, replace the system board.
What to do if flash corruption detected by SBIOS on Dell Desktop?
You can try a few things: 1. Press the power button for over 25 seconds to do an RTC reset. 2. Disconnect all power sources (AC, battery, coin cell) and drain flea power by pressing and holding down the power button for 3~5 seconds. If the problem persists, replace the system board.
How to fix Management Engine (ME) error on Dell OptiPlex 5400 All-in-One?
If you encounter a Management Engine (ME) error on your Dell Desktop, and a timeout error is displayed while waiting on ME to reply to HECI message, replace the system board.
What to do if power rail failure on Dell OptiPlex 5400 All-in-One Desktop?
Replace the system board.
How to fix system board/chipset error on Dell OptiPlex 5400 All-in-One?
Replace the system board.
What to do for ungraceful EC code flow errors on Dell OptiPlex 5400 All-in-One?
Disconnect all power sources (AC, battery, coin cell) and drain flea power by pressing and holding down the power button for 3~5 seconds.
How to fix LCD failure (EC detection of power rail failure) on Dell OptiPlex 5400 All-in-One?
If you are experiencing an LCD failure due to EC detection of power rail failure on your Dell Desktop, replace the system board.
How to fix RAM failure on Dell OptiPlex 5400 All-in-One Desktop?
To fix a memory or RAM failure in your Dell Desktop, try resetting the memory module. If the problem persists, replace the memory module.
What to do if my Dell OptiPlex 5400 All-in-One has a display failure?
To resolve a display failure on your Dell Desktop, flash the latest BIOS version. If the problem persists, consider replacing the LCD module.
How to fix BIOS failure on Dell Desktop?
If your Dell Desktop experiences a BIOS or ROM failure, flash the latest BIOS version. If the problem continues, the system board may need to be replaced.
General| RAM | Up to 64GB DDR4 |
|---|---|
| Processor | Up to 12th Gen Intel® Core™ i7 |
| Storage | Up to 2TB SSD |
| Display | 23.8-inch FHD (1920x1080) IPS |
| Graphics | Intel UHD Graphics |
| Operating System | Windows 11 Pro |
| Ports | HDMI, RJ-45 |
| Wireless | Bluetooth |
| Audio | Integrated |
| Camera | Pop-up webcam |
| Dimensions | 540.00 mm |
