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Samantha MartinezSep 18, 2025
What to do if Dell NOT21990 Laptop shows error code for RTC power failure?
- Nnancy99Sep 18, 2025
If your Dell Laptop displays an error code indicating an RTC power failure, replace the battery.
To Next PageTo Next PageWhat to do if Dell NOT21990 Laptop shows error code for RTC power failure?
If your Dell Laptop displays an error code indicating an RTC power failure, replace the battery.
What to do if flash corruption is detected by SBIOS in my Dell NOT21990 Laptop?
If SBIOS detects flash corruption on your Dell Laptop, try the following steps: First, press and hold the power button for over 25 seconds to perform an RTC reset. If that doesn't work, disconnect all power sources (AC adapter, battery, and coin cell) and drain flea power by pressing and holding the power button for 3 to 5 seconds. As a last resort, you may need to replace the system board.
What to do if the BIOS Recovery image is not found on my Dell NOT21990 Laptop?
If the BIOS Recovery image is not found on your Dell Laptop, try flashing the latest BIOS version. If this does not resolve the issue, the system board may need to be replaced.
What to do if my Dell NOT21990 Laptop LCD fails and shows an SBIOS message?
If you are getting an SBIOS message indicating LCD failure on your Dell Laptop, you will need to replace the LCD module.
What to do if EC detects power rail failure on my Dell Laptop LCD?
If the EC detects a power rail failure leading to LCD failure on your Dell Laptop, the recommended solution is to replace the system board.
Why is my Dell NOT21990 Laptop not detecting memory/RAM?
If your Dell laptop is not detecting memory, first ensure that the memory module is correctly installed. If the issue continues, try replacing the memory module.
What to do if my Dell NOT21990 Laptop has memory/RAM failure?
If you are experiencing memory or RAM failure with your Dell Laptop, the suggested solution is to replace the memory module.
What to do if my Dell Laptop has a System board/Chipset Error?
If your Dell Laptop is showing a System board/Chipset Error, you should replace the system board.
How to fix LCD failure (SBIOS message) on a Dell Laptop?
To fix an LCD failure (SBIOS message) on your Dell Laptop, replace the LCD module.
What to do if my Dell NOT21990 Laptop has LCD failure (EC detection of power rail failure)?
If your Dell Laptop's LCD fails due to EC detection of a power rail failure, you should replace the system board.
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